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Finding the Fourth Proportional to 216,040.40, 324,060.60 and 198,981.80

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Solution

The fourth proportional to 216,040.40, 324,060.60 and 198,981.80 is: 298,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,040.40 : 324,060.60 = 198,981.80 : x
  2. Step 2: Convert to fraction form
    216,040.40/324,060.60 = 198,981.80/x
  3. Step 3: Cross multiply
    216,040.40x = 324,060.60 × 198,981.80
  4. Step 4: Simplify right side
    216,040.40x = 64,482,161,497.08
  5. Step 5: Solve for x
    x = 64,482,161,497.08/216,040.40
  6. Step 6: Final answer
    x = 298,472.70

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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.