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Finding the Fourth Proportional to 495,540.55, 743,310.84 and 215,057.80

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Solution

The fourth proportional to 495,540.55, 743,310.84 and 215,057.80 is: 322,586.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,540.55 : 743,310.84 = 215,057.80 : x
  2. Step 2: Convert to fraction form
    495,540.55/743,310.84 = 215,057.80/x
  3. Step 3: Cross multiply
    495,540.55x = 743,310.84 × 215,057.80
  4. Step 4: Simplify right side
    495,540.55x = 159,854,793,966.55
  5. Step 5: Solve for x
    x = 159,854,793,966.55/495,540.55
  6. Step 6: Final answer
    x = 322,586.71

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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.