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Finding the Fourth Proportional to 199,358.61, 298,699.39 and 120,306.72

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Solution

The fourth proportional to 199,358.61, 298,699.39 and 120,306.72 is: 180,255.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,358.61 : 298,699.39 = 120,306.72 : x
  2. Step 2: Convert to fraction form
    199,358.61/298,699.39 = 120,306.72/x
  3. Step 3: Cross multiply
    199,358.61x = 298,699.39 × 120,306.72
  4. Step 4: Simplify right side
    199,358.61x = 35,935,543,876.90
  5. Step 5: Solve for x
    x = 35,935,543,876.90/199,358.61
  6. Step 6: Final answer
    x = 180,255.79

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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.