Home / 261,020.80-391,531.20-231,277.60

Finding the Fourth Proportional to 261,020.80, 391,531.20 and 231,277.60

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Solution

The fourth proportional to 261,020.80, 391,531.20 and 231,277.60 is: 346,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,020.80 : 391,531.20 = 231,277.60 : x
  2. Step 2: Convert to fraction form
    261,020.80/391,531.20 = 231,277.60/x
  3. Step 3: Cross multiply
    261,020.80x = 391,531.20 × 231,277.60
  4. Step 4: Simplify right side
    261,020.80x = 90,552,396,261.12
  5. Step 5: Solve for x
    x = 90,552,396,261.12/261,020.80
  6. Step 6: Final answer
    x = 346,916.40

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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.