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Finding the Fourth Proportional to 437,331.80, 656,256.90 and 288,000.20

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Solution

The fourth proportional to 437,331.80, 656,256.90 and 288,000.20 is: 432,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,331.80 : 656,256.90 = 288,000.20 : x
  2. Step 2: Convert to fraction form
    437,331.80/656,256.90 = 288,000.20/x
  3. Step 3: Cross multiply
    437,331.80x = 656,256.90 × 288,000.20
  4. Step 4: Simplify right side
    437,331.80x = 189,002,118,451.38
  5. Step 5: Solve for x
    x = 189,002,118,451.38/437,331.80
  6. Step 6: Final answer
    x = 432,170.99

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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.