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Finding the Fourth Proportional to 316,861.83, 437,279.49 and 173,630.97

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Solution

The fourth proportional to 316,861.83, 437,279.49 and 173,630.97 is: 239,616.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,861.83 : 437,279.49 = 173,630.97 : x
  2. Step 2: Convert to fraction form
    316,861.83/437,279.49 = 173,630.97/x
  3. Step 3: Cross multiply
    316,861.83x = 437,279.49 × 173,630.97
  4. Step 4: Simplify right side
    316,861.83x = 75,925,262,009.81
  5. Step 5: Solve for x
    x = 75,925,262,009.81/316,861.83
  6. Step 6: Final answer
    x = 239,616.31

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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.