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Finding the Fourth Proportional to 316,685.92, 437,026.56 and 173,445.76

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Solution

The fourth proportional to 316,685.92, 437,026.56 and 173,445.76 is: 239,355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,685.92 : 437,026.56 = 173,445.76 : x
  2. Step 2: Convert to fraction form
    316,685.92/437,026.56 = 173,445.76/x
  3. Step 3: Cross multiply
    316,685.92x = 437,026.56 × 173,445.76
  4. Step 4: Simplify right side
    316,685.92x = 75,800,403,839.39
  5. Step 5: Solve for x
    x = 75,800,403,839.39/316,685.92
  6. Step 6: Final answer
    x = 239,355.14

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1.5x scale

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.