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Finding the Fourth Proportional to 317,894.55, 476,842.07 and 81,237.47

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Solution

The fourth proportional to 317,894.55, 476,842.07 and 81,237.47 is: 121,856.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,894.55 : 476,842.07 = 81,237.47 : x
  2. Step 2: Convert to fraction form
    317,894.55/476,842.07 = 81,237.47/x
  3. Step 3: Cross multiply
    317,894.55x = 476,842.07 × 81,237.47
  4. Step 4: Simplify right side
    317,894.55x = 38,737,440,565.97
  5. Step 5: Solve for x
    x = 38,737,440,565.97/317,894.55
  6. Step 6: Final answer
    x = 121,856.26

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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.