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Finding the Fourth Proportional to 249,712.08, 374,392.89 and 91,920.30

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Solution

The fourth proportional to 249,712.08, 374,392.89 and 91,920.30 is: 137,815.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,712.08 : 374,392.89 = 91,920.30 : x
  2. Step 2: Convert to fraction form
    249,712.08/374,392.89 = 91,920.30/x
  3. Step 3: Cross multiply
    249,712.08x = 374,392.89 × 91,920.30
  4. Step 4: Simplify right side
    249,712.08x = 34,414,306,766.67
  5. Step 5: Solve for x
    x = 34,414,306,766.67/249,712.08
  6. Step 6: Final answer
    x = 137,815.95

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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.