Home / 258,876.11-388,340.66-99,086.30

Finding the Fourth Proportional to 258,876.11, 388,340.66 and 99,086.30

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Solution

The fourth proportional to 258,876.11, 388,340.66 and 99,086.30 is: 148,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,876.11 : 388,340.66 = 99,086.30 : x
  2. Step 2: Convert to fraction form
    258,876.11/388,340.66 = 99,086.30/x
  3. Step 3: Cross multiply
    258,876.11x = 388,340.66 × 99,086.30
  4. Step 4: Simplify right side
    258,876.11x = 38,479,238,901.25
  5. Step 5: Solve for x
    x = 38,479,238,901.25/258,876.11
  6. Step 6: Final answer
    x = 148,639.59

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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.