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Finding the Fourth Proportional to 276,909.17, 415,215.72 and 143,458.43

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Solution

The fourth proportional to 276,909.17, 415,215.72 and 143,458.43 is: 215,110.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,909.17 : 415,215.72 = 143,458.43 : x
  2. Step 2: Convert to fraction form
    276,909.17/415,215.72 = 143,458.43/x
  3. Step 3: Cross multiply
    276,909.17x = 415,215.72 × 143,458.43
  4. Step 4: Simplify right side
    276,909.17x = 59,566,193,226.44
  5. Step 5: Solve for x
    x = 59,566,193,226.44/276,909.17
  6. Step 6: Final answer
    x = 215,110.95

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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.