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Finding the Fourth Proportional to 252,221.96, 378,268.36 and 74,687.45

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Solution

The fourth proportional to 252,221.96, 378,268.36 and 74,687.45 is: 112,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,221.96 : 378,268.36 = 74,687.45 : x
  2. Step 2: Convert to fraction form
    252,221.96/378,268.36 = 74,687.45/x
  3. Step 3: Cross multiply
    252,221.96x = 378,268.36 × 74,687.45
  4. Step 4: Simplify right side
    252,221.96x = 28,251,899,224.08
  5. Step 5: Solve for x
    x = 28,251,899,224.08/252,221.96
  6. Step 6: Final answer
    x = 112,012.05

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1.5x scale

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.