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Finding the Fourth Proportional to 220,527.87, 330,702.72 and 85,520.85

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Solution

The fourth proportional to 220,527.87, 330,702.72 and 85,520.85 is: 128,246.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,527.87 : 330,702.72 = 85,520.85 : x
  2. Step 2: Convert to fraction form
    220,527.87/330,702.72 = 85,520.85/x
  3. Step 3: Cross multiply
    220,527.87x = 330,702.72 × 85,520.85
  4. Step 4: Simplify right side
    220,527.87x = 28,281,977,711.71
  5. Step 5: Solve for x
    x = 28,281,977,711.71/220,527.87
  6. Step 6: Final answer
    x = 128,246.73

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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.