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Finding the Fourth Proportional to 259,781.40, 389,672.10 and 200,732.40

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Solution

The fourth proportional to 259,781.40, 389,672.10 and 200,732.40 is: 301,098.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,781.40 : 389,672.10 = 200,732.40 : x
  2. Step 2: Convert to fraction form
    259,781.40/389,672.10 = 200,732.40/x
  3. Step 3: Cross multiply
    259,781.40x = 389,672.10 × 200,732.40
  4. Step 4: Simplify right side
    259,781.40x = 78,219,815,846.04
  5. Step 5: Solve for x
    x = 78,219,815,846.04/259,781.40
  6. Step 6: Final answer
    x = 301,098.60

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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.