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Finding the Fourth Proportional to 436,909.10, 655,363.65 and 259,324.70

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Solution

The fourth proportional to 436,909.10, 655,363.65 and 259,324.70 is: 388,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,909.10 : 655,363.65 = 259,324.70 : x
  2. Step 2: Convert to fraction form
    436,909.10/655,363.65 = 259,324.70/x
  3. Step 3: Cross multiply
    436,909.10x = 655,363.65 × 259,324.70
  4. Step 4: Simplify right side
    436,909.10x = 169,951,981,927.16
  5. Step 5: Solve for x
    x = 169,951,981,927.16/436,909.10
  6. Step 6: Final answer
    x = 388,987.05

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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.