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Finding the Fourth Proportional to 258,377.33, 387,172.32 and 132,012.47

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Solution

The fourth proportional to 258,377.33, 387,172.32 and 132,012.47 is: 197,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,377.33 : 387,172.32 = 132,012.47 : x
  2. Step 2: Convert to fraction form
    258,377.33/387,172.32 = 132,012.47/x
  3. Step 3: Cross multiply
    258,377.33x = 387,172.32 × 132,012.47
  4. Step 4: Simplify right side
    258,377.33x = 51,111,572,342.97
  5. Step 5: Solve for x
    x = 51,111,572,342.97/258,377.33
  6. Step 6: Final answer
    x = 197,817.56

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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.