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Finding the Fourth Proportional to 252,221.02, 378,386.88 and 74,741.92

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Solution

The fourth proportional to 252,221.02, 378,386.88 and 74,741.92 is: 112,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,221.02 : 378,386.88 = 74,741.92 : x
  2. Step 2: Convert to fraction form
    252,221.02/378,386.88 = 74,741.92/x
  3. Step 3: Cross multiply
    252,221.02x = 378,386.88 × 74,741.92
  4. Step 4: Simplify right side
    252,221.02x = 28,281,361,914.01
  5. Step 5: Solve for x
    x = 28,281,361,914.01/252,221.02
  6. Step 6: Final answer
    x = 112,129.28

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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.