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Finding the Fourth Proportional to 245,626.92, 338,961.78 and 143,722.44

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Solution

The fourth proportional to 245,626.92, 338,961.78 and 143,722.44 is: 198,335.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,626.92 : 338,961.78 = 143,722.44 : x
  2. Step 2: Convert to fraction form
    245,626.92/338,961.78 = 143,722.44/x
  3. Step 3: Cross multiply
    245,626.92x = 338,961.78 × 143,722.44
  4. Step 4: Simplify right side
    245,626.92x = 48,716,414,088.34
  5. Step 5: Solve for x
    x = 48,716,414,088.34/245,626.92
  6. Step 6: Final answer
    x = 198,335.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.