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Finding the Fourth Proportional to 245,976.60, 339,471.91 and 143,995.88

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Solution

The fourth proportional to 245,976.60, 339,471.91 and 143,995.88 is: 198,728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,976.60 : 339,471.91 = 143,995.88 : x
  2. Step 2: Convert to fraction form
    245,976.60/339,471.91 = 143,995.88/x
  3. Step 3: Cross multiply
    245,976.60x = 339,471.91 × 143,995.88
  4. Step 4: Simplify right side
    245,976.60x = 48,882,555,534.88
  5. Step 5: Solve for x
    x = 48,882,555,534.88/245,976.60
  6. Step 6: Final answer
    x = 198,728.48

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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.