Home / 258,017.40-386,961.30-91,766.52

Finding the Fourth Proportional to 258,017.40, 386,961.30 and 91,766.52

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Solution

The fourth proportional to 258,017.40, 386,961.30 and 91,766.52 is: 137,626.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,017.40 : 386,961.30 = 91,766.52 : x
  2. Step 2: Convert to fraction form
    258,017.40/386,961.30 = 91,766.52/x
  3. Step 3: Cross multiply
    258,017.40x = 386,961.30 × 91,766.52
  4. Step 4: Simplify right side
    258,017.40x = 35,510,091,875.68
  5. Step 5: Solve for x
    x = 35,510,091,875.68/258,017.40
  6. Step 6: Final answer
    x = 137,626.73

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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.