Home / 258,440.59-387,900.77-132,171.07

Finding the Fourth Proportional to 258,440.59, 387,900.77 and 132,171.07

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Solution

The fourth proportional to 258,440.59, 387,900.77 and 132,171.07 is: 198,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,440.59 : 387,900.77 = 132,171.07 : x
  2. Step 2: Convert to fraction form
    258,440.59/387,900.77 = 132,171.07/x
  3. Step 3: Cross multiply
    258,440.59x = 387,900.77 × 132,171.07
  4. Step 4: Simplify right side
    258,440.59x = 51,269,259,824.72
  5. Step 5: Solve for x
    x = 51,269,259,824.72/258,440.59
  6. Step 6: Final answer
    x = 198,379.29

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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.