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Finding the Fourth Proportional to 252,992.57, 379,364.90 and 84,455.06

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Solution

The fourth proportional to 252,992.57, 379,364.90 and 84,455.06 is: 126,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,992.57 : 379,364.90 = 84,455.06 : x
  2. Step 2: Convert to fraction form
    252,992.57/379,364.90 = 84,455.06/x
  3. Step 3: Cross multiply
    252,992.57x = 379,364.90 × 84,455.06
  4. Step 4: Simplify right side
    252,992.57x = 32,039,283,072.29
  5. Step 5: Solve for x
    x = 32,039,283,072.29/252,992.57
  6. Step 6: Final answer
    x = 126,641.20

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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.