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Finding the Fourth Proportional to 508,366.40, 762,330.90 and 255,549.20

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Solution

The fourth proportional to 508,366.40, 762,330.90 and 255,549.20 is: 383,213.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,366.40 : 762,330.90 = 255,549.20 : x
  2. Step 2: Convert to fraction form
    508,366.40/762,330.90 = 255,549.20/x
  3. Step 3: Cross multiply
    508,366.40x = 762,330.90 × 255,549.20
  4. Step 4: Simplify right side
    508,366.40x = 194,813,051,630.28
  5. Step 5: Solve for x
    x = 194,813,051,630.28/508,366.40
  6. Step 6: Final answer
    x = 383,213.86

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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.