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Finding the Fourth Proportional to 198,988.40, 298,045.20 and 159,622.40

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Solution

The fourth proportional to 198,988.40, 298,045.20 and 159,622.40 is: 239,082.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,988.40 : 298,045.20 = 159,622.40 : x
  2. Step 2: Convert to fraction form
    198,988.40/298,045.20 = 159,622.40/x
  3. Step 3: Cross multiply
    198,988.40x = 298,045.20 × 159,622.40
  4. Step 4: Simplify right side
    198,988.40x = 47,574,690,132.48
  5. Step 5: Solve for x
    x = 47,574,690,132.48/198,988.40
  6. Step 6: Final answer
    x = 239,082.73

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1.5x scale

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.