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Finding the Fourth Proportional to 316,906.75, 437,331.45 and 173,672.56

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Solution

The fourth proportional to 316,906.75, 437,331.45 and 173,672.56 is: 239,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,906.75 : 437,331.45 = 173,672.56 : x
  2. Step 2: Convert to fraction form
    316,906.75/437,331.45 = 173,672.56/x
  3. Step 3: Cross multiply
    316,906.75x = 437,331.45 × 173,672.56
  4. Step 4: Simplify right side
    316,906.75x = 75,952,472,490.01
  5. Step 5: Solve for x
    x = 75,952,472,490.01/316,906.75
  6. Step 6: Final answer
    x = 239,668.21

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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.