Home / 258,020.40-386,965.80-91,769.52

Finding the Fourth Proportional to 258,020.40, 386,965.80 and 91,769.52

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Solution

The fourth proportional to 258,020.40, 386,965.80 and 91,769.52 is: 137,631.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,020.40 : 386,965.80 = 91,769.52 : x
  2. Step 2: Convert to fraction form
    258,020.40/386,965.80 = 91,769.52/x
  3. Step 3: Cross multiply
    258,020.40x = 386,965.80 × 91,769.52
  4. Step 4: Simplify right side
    258,020.40x = 35,511,665,722.42
  5. Step 5: Solve for x
    x = 35,511,665,722.42/258,020.40
  6. Step 6: Final answer
    x = 137,631.23

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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.