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Finding the Fourth Proportional to 202,387.28, 279,273.24 and 117,487.76

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Solution

The fourth proportional to 202,387.28, 279,273.24 and 117,487.76 is: 162,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,387.28 : 279,273.24 = 117,487.76 : x
  2. Step 2: Convert to fraction form
    202,387.28/279,273.24 = 117,487.76/x
  3. Step 3: Cross multiply
    202,387.28x = 279,273.24 × 117,487.76
  4. Step 4: Simplify right side
    202,387.28x = 32,811,187,395.54
  5. Step 5: Solve for x
    x = 32,811,187,395.54/202,387.28
  6. Step 6: Final answer
    x = 162,120.80

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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.