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Finding the Fourth Proportional to 252,221.52, 378,387.63 and 74,742.42

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Solution

The fourth proportional to 252,221.52, 378,387.63 and 74,742.42 is: 112,130.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,221.52 : 378,387.63 = 74,742.42 : x
  2. Step 2: Convert to fraction form
    252,221.52/378,387.63 = 74,742.42/x
  3. Step 3: Cross multiply
    252,221.52x = 378,387.63 × 74,742.42
  4. Step 4: Simplify right side
    252,221.52x = 28,281,607,164.26
  5. Step 5: Solve for x
    x = 28,281,607,164.26/252,221.52
  6. Step 6: Final answer
    x = 112,130.03

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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.