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Finding the Fourth Proportional to 198,378.75, 298,640.62 and 180,722.88

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Solution

The fourth proportional to 198,378.75, 298,640.62 and 180,722.88 is: 272,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,378.75 : 298,640.62 = 180,722.88 : x
  2. Step 2: Convert to fraction form
    198,378.75/298,640.62 = 180,722.88/x
  3. Step 3: Cross multiply
    198,378.75x = 298,640.62 × 180,722.88
  4. Step 4: Simplify right side
    198,378.75x = 53,971,192,931.39
  5. Step 5: Solve for x
    x = 53,971,192,931.39/198,378.75
  6. Step 6: Final answer
    x = 272,061.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.