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Finding the Fourth Proportional to 424,402.68, 636,645.54 and 154,604.10

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Solution

The fourth proportional to 424,402.68, 636,645.54 and 154,604.10 is: 231,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,402.68 : 636,645.54 = 154,604.10 : x
  2. Step 2: Convert to fraction form
    424,402.68/636,645.54 = 154,604.10/x
  3. Step 3: Cross multiply
    424,402.68x = 636,645.54 × 154,604.10
  4. Step 4: Simplify right side
    424,402.68x = 98,428,010,730.71
  5. Step 5: Solve for x
    x = 98,428,010,730.71/424,402.68
  6. Step 6: Final answer
    x = 231,921.28

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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.