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Finding the Fourth Proportional to 249,436.80, 374,155.20 and 125,020.80

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Solution

The fourth proportional to 249,436.80, 374,155.20 and 125,020.80 is: 187,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,436.80 : 374,155.20 = 125,020.80 : x
  2. Step 2: Convert to fraction form
    249,436.80/374,155.20 = 125,020.80/x
  3. Step 3: Cross multiply
    249,436.80x = 374,155.20 × 125,020.80
  4. Step 4: Simplify right side
    249,436.80x = 46,777,182,428.16
  5. Step 5: Solve for x
    x = 46,777,182,428.16/249,436.80
  6. Step 6: Final answer
    x = 187,531.20

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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.