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Finding the Fourth Proportional to 486,691.20, 730,028.16 and 249,894.72

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Solution

The fourth proportional to 486,691.20, 730,028.16 and 249,894.72 is: 374,837.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,691.20 : 730,028.16 = 249,894.72 : x
  2. Step 2: Convert to fraction form
    486,691.20/730,028.16 = 249,894.72/x
  3. Step 3: Cross multiply
    486,691.20x = 730,028.16 × 249,894.72
  4. Step 4: Simplify right side
    486,691.20x = 182,430,182,635.32
  5. Step 5: Solve for x
    x = 182,430,182,635.32/486,691.20
  6. Step 6: Final answer
    x = 374,837.64

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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.