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Finding the Fourth Proportional to 508,547.51, 762,836.99 and 255,838.30

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Solution

The fourth proportional to 508,547.51, 762,836.99 and 255,838.30 is: 383,765.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,547.51 : 762,836.99 = 255,838.30 : x
  2. Step 2: Convert to fraction form
    508,547.51/762,836.99 = 255,838.30/x
  3. Step 3: Cross multiply
    508,547.51x = 762,836.99 × 255,838.30
  4. Step 4: Simplify right side
    508,547.51x = 195,162,916,951.52
  5. Step 5: Solve for x
    x = 195,162,916,951.52/508,547.51
  6. Step 6: Final answer
    x = 383,765.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.