Home / 258,620.59-387,914.77-123,780.43

Finding the Fourth Proportional to 258,620.59, 387,914.77 and 123,780.43

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Solution

The fourth proportional to 258,620.59, 387,914.77 and 123,780.43 is: 185,662.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,620.59 : 387,914.77 = 123,780.43 : x
  2. Step 2: Convert to fraction form
    258,620.59/387,914.77 = 123,780.43/x
  3. Step 3: Cross multiply
    258,620.59x = 387,914.77 × 123,780.43
  4. Step 4: Simplify right side
    258,620.59x = 48,016,257,033.95
  5. Step 5: Solve for x
    x = 48,016,257,033.95/258,620.59
  6. Step 6: Final answer
    x = 185,662.93

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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.