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Finding the Fourth Proportional to 508,386.40, 762,360.90 and 255,569.20

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Solution

The fourth proportional to 508,386.40, 762,360.90 and 255,569.20 is: 383,243.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,386.40 : 762,360.90 = 255,569.20 : x
  2. Step 2: Convert to fraction form
    508,386.40/762,360.90 = 255,569.20/x
  3. Step 3: Cross multiply
    508,386.40x = 762,360.90 × 255,569.20
  4. Step 4: Simplify right side
    508,386.40x = 194,835,965,324.28
  5. Step 5: Solve for x
    x = 194,835,965,324.28/508,386.40
  6. Step 6: Final answer
    x = 383,243.86

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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.