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Finding the Fourth Proportional to 278,682.62, 417,479.69 and 132,414.35

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Solution

The fourth proportional to 278,682.62, 417,479.69 and 132,414.35 is: 198,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,682.62 : 417,479.69 = 132,414.35 : x
  2. Step 2: Convert to fraction form
    278,682.62/417,479.69 = 132,414.35/x
  3. Step 3: Cross multiply
    278,682.62x = 417,479.69 × 132,414.35
  4. Step 4: Simplify right side
    278,682.62x = 55,280,299,040.08
  5. Step 5: Solve for x
    x = 55,280,299,040.08/278,682.62
  6. Step 6: Final answer
    x = 198,362.93

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1.5x scale

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.