Home / 278,845.38-384,876.60-158,058.72

Finding the Fourth Proportional to 278,845.38, 384,876.60 and 158,058.72

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Solution

The fourth proportional to 278,845.38, 384,876.60 and 158,058.72 is: 218,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,845.38 : 384,876.60 = 158,058.72 : x
  2. Step 2: Convert to fraction form
    278,845.38/384,876.60 = 158,058.72/x
  3. Step 3: Cross multiply
    278,845.38x = 384,876.60 × 158,058.72
  4. Step 4: Simplify right side
    278,845.38x = 60,833,102,753.95
  5. Step 5: Solve for x
    x = 60,833,102,753.95/278,845.38
  6. Step 6: Final answer
    x = 218,160.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.