Home / 198,718.47-298,679.91-131,479.84

Finding the Fourth Proportional to 198,718.47, 298,679.91 and 131,479.84

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Solution

The fourth proportional to 198,718.47, 298,679.91 and 131,479.84 is: 197,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,718.47 : 298,679.91 = 131,479.84 : x
  2. Step 2: Convert to fraction form
    198,718.47/298,679.91 = 131,479.84/x
  3. Step 3: Cross multiply
    198,718.47x = 298,679.91 × 131,479.84
  4. Step 4: Simplify right side
    198,718.47x = 39,270,385,284.61
  5. Step 5: Solve for x
    x = 39,270,385,284.61/198,718.47
  6. Step 6: Final answer
    x = 197,618.20

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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.