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Finding the Fourth Proportional to 317,335.73, 437,920.73 and 172,141.10

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Solution

The fourth proportional to 317,335.73, 437,920.73 and 172,141.10 is: 237,553.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,335.73 : 437,920.73 = 172,141.10 : x
  2. Step 2: Convert to fraction form
    317,335.73/437,920.73 = 172,141.10/x
  3. Step 3: Cross multiply
    317,335.73x = 437,920.73 × 172,141.10
  4. Step 4: Simplify right side
    317,335.73x = 75,384,155,412.43
  5. Step 5: Solve for x
    x = 75,384,155,412.43/317,335.73
  6. Step 6: Final answer
    x = 237,553.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.