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Finding the Fourth Proportional to 279,248.98, 418,864.55 and 89,708.57

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Solution

The fourth proportional to 279,248.98, 418,864.55 and 89,708.57 is: 134,559.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,248.98 : 418,864.55 = 89,708.57 : x
  2. Step 2: Convert to fraction form
    279,248.98/418,864.55 = 89,708.57/x
  3. Step 3: Cross multiply
    279,248.98x = 418,864.55 × 89,708.57
  4. Step 4: Simplify right side
    279,248.98x = 37,575,739,355.65
  5. Step 5: Solve for x
    x = 37,575,739,355.65/279,248.98
  6. Step 6: Final answer
    x = 134,559.99

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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.