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Finding the Fourth Proportional to 279,064.82, 418,557.80 and 89,500.55

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Solution

The fourth proportional to 279,064.82, 418,557.80 and 89,500.55 is: 134,238.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,064.82 : 418,557.80 = 89,500.55 : x
  2. Step 2: Convert to fraction form
    279,064.82/418,557.80 = 89,500.55/x
  3. Step 3: Cross multiply
    279,064.82x = 418,557.80 × 89,500.55
  4. Step 4: Simplify right side
    279,064.82x = 37,461,153,306.79
  5. Step 5: Solve for x
    x = 37,461,153,306.79/279,064.82
  6. Step 6: Final answer
    x = 134,238.18

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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.