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Finding the Fourth Proportional to 269,020, 371,273.52 and 149,788

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Solution

The fourth proportional to 269,020, 371,273.52 and 149,788 is: 206,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,020 : 371,273.52 = 149,788 : x
  2. Step 2: Convert to fraction form
    269,020/371,273.52 = 149,788/x
  3. Step 3: Cross multiply
    269,020x = 371,273.52 × 149,788
  4. Step 4: Simplify right side
    269,020x = 55,612,318,013.76
  5. Step 5: Solve for x
    x = 55,612,318,013.76/269,020
  6. Step 6: Final answer
    x = 206,721.87

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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.