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Finding the Fourth Proportional to 252,388.80, 378,501.26 and 83,863.88

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Solution

The fourth proportional to 252,388.80, 378,501.26 and 83,863.88 is: 125,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,388.80 : 378,501.26 = 83,863.88 : x
  2. Step 2: Convert to fraction form
    252,388.80/378,501.26 = 83,863.88/x
  3. Step 3: Cross multiply
    252,388.80x = 378,501.26 × 83,863.88
  4. Step 4: Simplify right side
    252,388.80x = 31,742,581,936.66
  5. Step 5: Solve for x
    x = 31,742,581,936.66/252,388.80
  6. Step 6: Final answer
    x = 125,768.58

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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.