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Finding the Fourth Proportional to 220,164.70, 330,149.85 and 87,000.70

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Solution

The fourth proportional to 220,164.70, 330,149.85 and 87,000.70 is: 130,462.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,164.70 : 330,149.85 = 87,000.70 : x
  2. Step 2: Convert to fraction form
    220,164.70/330,149.85 = 87,000.70/x
  3. Step 3: Cross multiply
    220,164.70x = 330,149.85 × 87,000.70
  4. Step 4: Simplify right side
    220,164.70x = 28,723,268,054.90
  5. Step 5: Solve for x
    x = 28,723,268,054.90/220,164.70
  6. Step 6: Final answer
    x = 130,462.64

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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.