Home / 258,436.22-387,894.21-132,166.70

Finding the Fourth Proportional to 258,436.22, 387,894.21 and 132,166.70

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Solution

The fourth proportional to 258,436.22, 387,894.21 and 132,166.70 is: 198,372.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,436.22 : 387,894.21 = 132,166.70 : x
  2. Step 2: Convert to fraction form
    258,436.22/387,894.21 = 132,166.70/x
  3. Step 3: Cross multiply
    258,436.22x = 387,894.21 × 132,166.70
  4. Step 4: Simplify right side
    258,436.22x = 51,266,695,745.34
  5. Step 5: Solve for x
    x = 51,266,695,745.34/258,436.22
  6. Step 6: Final answer
    x = 198,372.72

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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.