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Finding the Fourth Proportional to 486,034.20, 728,686.80 and 249,546.60

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Solution

The fourth proportional to 486,034.20, 728,686.80 and 249,546.60 is: 374,132.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,034.20 : 728,686.80 = 249,546.60 : x
  2. Step 2: Convert to fraction form
    486,034.20/728,686.80 = 249,546.60/x
  3. Step 3: Cross multiply
    486,034.20x = 728,686.80 × 249,546.60
  4. Step 4: Simplify right side
    486,034.20x = 181,841,313,404.88
  5. Step 5: Solve for x
    x = 181,841,313,404.88/486,034.20
  6. Step 6: Final answer
    x = 374,132.75

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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.