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Finding the Fourth Proportional to 252,398.79, 378,282.48 and 126,074.31

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Solution

The fourth proportional to 252,398.79, 378,282.48 and 126,074.31 is: 188,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,398.79 : 378,282.48 = 126,074.31 : x
  2. Step 2: Convert to fraction form
    252,398.79/378,282.48 = 126,074.31/x
  3. Step 3: Cross multiply
    252,398.79x = 378,282.48 × 126,074.31
  4. Step 4: Simplify right side
    252,398.79x = 47,691,702,651.09
  5. Step 5: Solve for x
    x = 47,691,702,651.09/252,398.79
  6. Step 6: Final answer
    x = 188,953.77

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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.