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Finding the Fourth Proportional to 437,545.20, 655,005.60 and 259,960.80

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Solution

The fourth proportional to 437,545.20, 655,005.60 and 259,960.80 is: 389,161.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,545.20 : 655,005.60 = 259,960.80 : x
  2. Step 2: Convert to fraction form
    437,545.20/655,005.60 = 259,960.80/x
  3. Step 3: Cross multiply
    437,545.20x = 655,005.60 × 259,960.80
  4. Step 4: Simplify right side
    437,545.20x = 170,275,779,780.48
  5. Step 5: Solve for x
    x = 170,275,779,780.48/437,545.20
  6. Step 6: Final answer
    x = 389,161.58

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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.