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Finding the Fourth Proportional to 442,901.80, 664,449.90 and 143,331.40

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Solution

The fourth proportional to 442,901.80, 664,449.90 and 143,331.40 is: 215,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,901.80 : 664,449.90 = 143,331.40 : x
  2. Step 2: Convert to fraction form
    442,901.80/664,449.90 = 143,331.40/x
  3. Step 3: Cross multiply
    442,901.80x = 664,449.90 × 143,331.40
  4. Step 4: Simplify right side
    442,901.80x = 95,236,534,396.86
  5. Step 5: Solve for x
    x = 95,236,534,396.86/442,901.80
  6. Step 6: Final answer
    x = 215,028.56

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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.