Home / 278,845.32-418,083.06-101,331.24

Finding the Fourth Proportional to 278,845.32, 418,083.06 and 101,331.24

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Solution

The fourth proportional to 278,845.32, 418,083.06 and 101,331.24 is: 151,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,845.32 : 418,083.06 = 101,331.24 : x
  2. Step 2: Convert to fraction form
    278,845.32/418,083.06 = 101,331.24/x
  3. Step 3: Cross multiply
    278,845.32x = 418,083.06 × 101,331.24
  4. Step 4: Simplify right side
    278,845.32x = 42,364,874,892.79
  5. Step 5: Solve for x
    x = 42,364,874,892.79/278,845.32
  6. Step 6: Final answer
    x = 151,929.66

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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.