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Finding the Fourth Proportional to 279,500.64, 418,721.41 and 165,306.84

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Solution

The fourth proportional to 279,500.64, 418,721.41 and 165,306.84 is: 247,647.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,500.64 : 418,721.41 = 165,306.84 : x
  2. Step 2: Convert to fraction form
    279,500.64/418,721.41 = 165,306.84/x
  3. Step 3: Cross multiply
    279,500.64x = 418,721.41 × 165,306.84
  4. Step 4: Simplify right side
    279,500.64x = 69,217,513,127.44
  5. Step 5: Solve for x
    x = 69,217,513,127.44/279,500.64
  6. Step 6: Final answer
    x = 247,647.06

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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.