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Finding the Fourth Proportional to 278,481.30, 417,721.95 and 173,246.10

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Solution

The fourth proportional to 278,481.30, 417,721.95 and 173,246.10 is: 259,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,481.30 : 417,721.95 = 173,246.10 : x
  2. Step 2: Convert to fraction form
    278,481.30/417,721.95 = 173,246.10/x
  3. Step 3: Cross multiply
    278,481.30x = 417,721.95 × 173,246.10
  4. Step 4: Simplify right side
    278,481.30x = 72,368,698,721.90
  5. Step 5: Solve for x
    x = 72,368,698,721.90/278,481.30
  6. Step 6: Final answer
    x = 259,869.15

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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.