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Finding the Fourth Proportional to 259,567.80, 389,082.90 and 140,988.60

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Solution

The fourth proportional to 259,567.80, 389,082.90 and 140,988.60 is: 211,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,567.80 : 389,082.90 = 140,988.60 : x
  2. Step 2: Convert to fraction form
    259,567.80/389,082.90 = 140,988.60/x
  3. Step 3: Cross multiply
    259,567.80x = 389,082.90 × 140,988.60
  4. Step 4: Simplify right side
    259,567.80x = 54,856,253,354.94
  5. Step 5: Solve for x
    x = 54,856,253,354.94/259,567.80
  6. Step 6: Final answer
    x = 211,336.90

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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.