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Finding the Fourth Proportional to 272,439.66, 375,957.21 and 149,920.59

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Solution

The fourth proportional to 272,439.66, 375,957.21 and 149,920.59 is: 206,885.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,439.66 : 375,957.21 = 149,920.59 : x
  2. Step 2: Convert to fraction form
    272,439.66/375,957.21 = 149,920.59/x
  3. Step 3: Cross multiply
    272,439.66x = 375,957.21 × 149,920.59
  4. Step 4: Simplify right side
    272,439.66x = 56,363,726,737.95
  5. Step 5: Solve for x
    x = 56,363,726,737.95/272,439.66
  6. Step 6: Final answer
    x = 206,885.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.