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Finding the Fourth Proportional to 199,279.40, 298,919.10 and 191,503.40

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Solution

The fourth proportional to 199,279.40, 298,919.10 and 191,503.40 is: 287,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,279.40 : 298,919.10 = 191,503.40 : x
  2. Step 2: Convert to fraction form
    199,279.40/298,919.10 = 191,503.40/x
  3. Step 3: Cross multiply
    199,279.40x = 298,919.10 × 191,503.40
  4. Step 4: Simplify right side
    199,279.40x = 57,244,023,974.94
  5. Step 5: Solve for x
    x = 57,244,023,974.94/199,279.40
  6. Step 6: Final answer
    x = 287,255.10

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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.