Home / 278,456.13-417,680.55-68,095.89

Finding the Fourth Proportional to 278,456.13, 417,680.55 and 68,095.89

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Solution

The fourth proportional to 278,456.13, 417,680.55 and 68,095.89 is: 102,142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,456.13 : 417,680.55 = 68,095.89 : x
  2. Step 2: Convert to fraction form
    278,456.13/417,680.55 = 68,095.89/x
  3. Step 3: Cross multiply
    278,456.13x = 417,680.55 × 68,095.89
  4. Step 4: Simplify right side
    278,456.13x = 28,442,328,787.94
  5. Step 5: Solve for x
    x = 28,442,328,787.94/278,456.13
  6. Step 6: Final answer
    x = 102,142.94

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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.