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Finding the Fourth Proportional to 316,871.10, 437,279.58 and 173,630.79

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Solution

The fourth proportional to 316,871.10, 437,279.58 and 173,630.79 is: 239,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,871.10 : 437,279.58 = 173,630.79 : x
  2. Step 2: Convert to fraction form
    316,871.10/437,279.58 = 173,630.79/x
  3. Step 3: Cross multiply
    316,871.10x = 437,279.58 × 173,630.79
  4. Step 4: Simplify right side
    316,871.10x = 75,925,198,926.27
  5. Step 5: Solve for x
    x = 75,925,198,926.27/316,871.10
  6. Step 6: Final answer
    x = 239,609.10

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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.