Home / 278,402.32-417,399-88,753.60

Finding the Fourth Proportional to 278,402.32, 417,399 and 88,753.60

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Solution

The fourth proportional to 278,402.32, 417,399 and 88,753.60 is: 133,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,402.32 : 417,399 = 88,753.60 : x
  2. Step 2: Convert to fraction form
    278,402.32/417,399 = 88,753.60/x
  3. Step 3: Cross multiply
    278,402.32x = 417,399 × 88,753.60
  4. Step 4: Simplify right side
    278,402.32x = 37,045,663,886.40
  5. Step 5: Solve for x
    x = 37,045,663,886.40/278,402.32
  6. Step 6: Final answer
    x = 133,065.21

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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.