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Finding the Fourth Proportional to 279,189.48, 418,854.56 and 89,666.88

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Solution

The fourth proportional to 279,189.48, 418,854.56 and 89,666.88 is: 134,522.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,189.48 : 418,854.56 = 89,666.88 : x
  2. Step 2: Convert to fraction form
    279,189.48/418,854.56 = 89,666.88/x
  3. Step 3: Cross multiply
    279,189.48x = 418,854.56 × 89,666.88
  4. Step 4: Simplify right side
    279,189.48x = 37,557,381,568.97
  5. Step 5: Solve for x
    x = 37,557,381,568.97/279,189.48
  6. Step 6: Final answer
    x = 134,522.91

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1.5x scale

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.