Home / 198,769.04-298,291.80-128,474

Finding the Fourth Proportional to 198,769.04, 298,291.80 and 128,474

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Solution

The fourth proportional to 198,769.04, 298,291.80 and 128,474 is: 192,800.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,769.04 : 298,291.80 = 128,474 : x
  2. Step 2: Convert to fraction form
    198,769.04/298,291.80 = 128,474/x
  3. Step 3: Cross multiply
    198,769.04x = 298,291.80 × 128,474
  4. Step 4: Simplify right side
    198,769.04x = 38,322,740,713.20
  5. Step 5: Solve for x
    x = 38,322,740,713.20/198,769.04
  6. Step 6: Final answer
    x = 192,800.35

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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.