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Finding the Fourth Proportional to 659,205.20, 988,613.40 and 259,713.20

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Solution

The fourth proportional to 659,205.20, 988,613.40 and 259,713.20 is: 389,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,205.20 : 988,613.40 = 259,713.20 : x
  2. Step 2: Convert to fraction form
    659,205.20/988,613.40 = 259,713.20/x
  3. Step 3: Cross multiply
    659,205.20x = 988,613.40 × 259,713.20
  4. Step 4: Simplify right side
    659,205.20x = 256,755,949,676.88
  5. Step 5: Solve for x
    x = 256,755,949,676.88/659,205.20
  6. Step 6: Final answer
    x = 389,493.21

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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.