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Finding the Fourth Proportional to 316,565.64, 436,861.82 and 173,324.43

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Solution

The fourth proportional to 316,565.64, 436,861.82 and 173,324.43 is: 239,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,565.64 : 436,861.82 = 173,324.43 : x
  2. Step 2: Convert to fraction form
    316,565.64/436,861.82 = 173,324.43/x
  3. Step 3: Cross multiply
    316,565.64x = 436,861.82 × 173,324.43
  4. Step 4: Simplify right side
    316,565.64x = 75,718,826,373.57
  5. Step 5: Solve for x
    x = 75,718,826,373.57/316,565.64
  6. Step 6: Final answer
    x = 239,188.39

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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.