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Finding the Fourth Proportional to 207,273.20, 310,909.80 and 143,959.56

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Solution

The fourth proportional to 207,273.20, 310,909.80 and 143,959.56 is: 215,939.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,273.20 : 310,909.80 = 143,959.56 : x
  2. Step 2: Convert to fraction form
    207,273.20/310,909.80 = 143,959.56/x
  3. Step 3: Cross multiply
    207,273.20x = 310,909.80 × 143,959.56
  4. Step 4: Simplify right side
    207,273.20x = 44,758,438,007.69
  5. Step 5: Solve for x
    x = 44,758,438,007.69/207,273.20
  6. Step 6: Final answer
    x = 215,939.34

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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.