Home / 198,687.40-298,359.15-132,421.30

Finding the Fourth Proportional to 198,687.40, 298,359.15 and 132,421.30

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Solution

The fourth proportional to 198,687.40, 298,359.15 and 132,421.30 is: 198,850.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,687.40 : 298,359.15 = 132,421.30 : x
  2. Step 2: Convert to fraction form
    198,687.40/298,359.15 = 132,421.30/x
  3. Step 3: Cross multiply
    198,687.40x = 298,359.15 × 132,421.30
  4. Step 4: Simplify right side
    198,687.40x = 39,509,106,509.90
  5. Step 5: Solve for x
    x = 39,509,106,509.90/198,687.40
  6. Step 6: Final answer
    x = 198,850.59

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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.