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Finding the Fourth Proportional to 316,460.70, 474,693.03 and 129,472.20

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Solution

The fourth proportional to 316,460.70, 474,693.03 and 129,472.20 is: 194,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,460.70 : 474,693.03 = 129,472.20 : x
  2. Step 2: Convert to fraction form
    316,460.70/474,693.03 = 129,472.20/x
  3. Step 3: Cross multiply
    316,460.70x = 474,693.03 × 129,472.20
  4. Step 4: Simplify right side
    316,460.70x = 61,459,550,918.77
  5. Step 5: Solve for x
    x = 61,459,550,918.77/316,460.70
  6. Step 6: Final answer
    x = 194,209.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.