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Finding the Fourth Proportional to 220,165.18, 330,143.68 and 85,292.42

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Solution

The fourth proportional to 220,165.18, 330,143.68 and 85,292.42 is: 127,898.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,165.18 : 330,143.68 = 85,292.42 : x
  2. Step 2: Convert to fraction form
    220,165.18/330,143.68 = 85,292.42/x
  3. Step 3: Cross multiply
    220,165.18x = 330,143.68 × 85,292.42
  4. Step 4: Simplify right side
    220,165.18x = 28,158,753,414.91
  5. Step 5: Solve for x
    x = 28,158,753,414.91/220,165.18
  6. Step 6: Final answer
    x = 127,898.31

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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.