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Finding the Fourth Proportional to 279,597.88, 419,397.56 and 129,819.16

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Solution

The fourth proportional to 279,597.88, 419,397.56 and 129,819.16 is: 194,729.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,597.88 : 419,397.56 = 129,819.16 : x
  2. Step 2: Convert to fraction form
    279,597.88/419,397.56 = 129,819.16/x
  3. Step 3: Cross multiply
    279,597.88x = 419,397.56 × 129,819.16
  4. Step 4: Simplify right side
    279,597.88x = 54,445,838,945.25
  5. Step 5: Solve for x
    x = 54,445,838,945.25/279,597.88
  6. Step 6: Final answer
    x = 194,729.08

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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.