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Finding the Fourth Proportional to 205,573.11, 308,515.46 and 87,327.42

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Solution

The fourth proportional to 205,573.11, 308,515.46 and 87,327.42 is: 131,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,573.11 : 308,515.46 = 87,327.42 : x
  2. Step 2: Convert to fraction form
    205,573.11/308,515.46 = 87,327.42/x
  3. Step 3: Cross multiply
    205,573.11x = 308,515.46 × 87,327.42
  4. Step 4: Simplify right side
    205,573.11x = 26,941,858,715.28
  5. Step 5: Solve for x
    x = 26,941,858,715.28/205,573.11
  6. Step 6: Final answer
    x = 131,057.31

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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.