Home / 278,909.46-418,391.82-89,322.12

Finding the Fourth Proportional to 278,909.46, 418,391.82 and 89,322.12

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Solution

The fourth proportional to 278,909.46, 418,391.82 and 89,322.12 is: 133,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,909.46 : 418,391.82 = 89,322.12 : x
  2. Step 2: Convert to fraction form
    278,909.46/418,391.82 = 89,322.12/x
  3. Step 3: Cross multiply
    278,909.46x = 418,391.82 × 89,322.12
  4. Step 4: Simplify right side
    278,909.46x = 37,371,644,353.06
  5. Step 5: Solve for x
    x = 37,371,644,353.06/278,909.46
  6. Step 6: Final answer
    x = 133,992.03

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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.