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Finding the Fourth Proportional to 249,542.40, 374,372.16 and 81,062.40

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Solution

The fourth proportional to 249,542.40, 374,372.16 and 81,062.40 is: 121,612.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,542.40 : 374,372.16 = 81,062.40 : x
  2. Step 2: Convert to fraction form
    249,542.40/374,372.16 = 81,062.40/x
  3. Step 3: Cross multiply
    249,542.40x = 374,372.16 × 81,062.40
  4. Step 4: Simplify right side
    249,542.40x = 30,347,505,782.78
  5. Step 5: Solve for x
    x = 30,347,505,782.78/249,542.40
  6. Step 6: Final answer
    x = 121,612.62

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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.