Home / 258,081.79-386,965.41-115,899.43

Finding the Fourth Proportional to 258,081.79, 386,965.41 and 115,899.43

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Solution

The fourth proportional to 258,081.79, 386,965.41 and 115,899.43 is: 173,778.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,081.79 : 386,965.41 = 115,899.43 : x
  2. Step 2: Convert to fraction form
    258,081.79/386,965.41 = 115,899.43/x
  3. Step 3: Cross multiply
    258,081.79x = 386,965.41 × 115,899.43
  4. Step 4: Simplify right side
    258,081.79x = 44,849,070,448.72
  5. Step 5: Solve for x
    x = 44,849,070,448.72/258,081.79
  6. Step 6: Final answer
    x = 173,778.52

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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.