Home / 438,132.20-655,740.30-317,847.20

Finding the Fourth Proportional to 438,132.20, 655,740.30 and 317,847.20

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Solution

The fourth proportional to 438,132.20, 655,740.30 and 317,847.20 is: 475,713.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,132.20 : 655,740.30 = 317,847.20 : x
  2. Step 2: Convert to fraction form
    438,132.20/655,740.30 = 317,847.20/x
  3. Step 3: Cross multiply
    438,132.20x = 655,740.30 × 317,847.20
  4. Step 4: Simplify right side
    438,132.20x = 208,425,218,282.16
  5. Step 5: Solve for x
    x = 208,425,218,282.16/438,132.20
  6. Step 6: Final answer
    x = 475,713.08

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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.