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Finding the Fourth Proportional to 330,451.20, 495,398.16 and 143,321.76

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Solution

The fourth proportional to 330,451.20, 495,398.16 and 143,321.76 is: 214,861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,451.20 : 495,398.16 = 143,321.76 : x
  2. Step 2: Convert to fraction form
    330,451.20/495,398.16 = 143,321.76/x
  3. Step 3: Cross multiply
    330,451.20x = 495,398.16 × 143,321.76
  4. Step 4: Simplify right side
    330,451.20x = 71,001,336,191.96
  5. Step 5: Solve for x
    x = 71,001,336,191.96/330,451.20
  6. Step 6: Final answer
    x = 214,861.79

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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.