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Finding the Fourth Proportional to 279,089.52, 418,648.80 and 92,115.60

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Solution

The fourth proportional to 279,089.52, 418,648.80 and 92,115.60 is: 138,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,089.52 : 418,648.80 = 92,115.60 : x
  2. Step 2: Convert to fraction form
    279,089.52/418,648.80 = 92,115.60/x
  3. Step 3: Cross multiply
    279,089.52x = 418,648.80 × 92,115.60
  4. Step 4: Simplify right side
    279,089.52x = 38,564,085,401.28
  5. Step 5: Solve for x
    x = 38,564,085,401.28/279,089.52
  6. Step 6: Final answer
    x = 138,178.19

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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.