Home / 252,111.27-378,165.51-145,426.05

Finding the Fourth Proportional to 252,111.27, 378,165.51 and 145,426.05

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Solution

The fourth proportional to 252,111.27, 378,165.51 and 145,426.05 is: 218,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,111.27 : 378,165.51 = 145,426.05 : x
  2. Step 2: Convert to fraction form
    252,111.27/378,165.51 = 145,426.05/x
  3. Step 3: Cross multiply
    252,111.27x = 378,165.51 × 145,426.05
  4. Step 4: Simplify right side
    252,111.27x = 54,995,116,365.54
  5. Step 5: Solve for x
    x = 54,995,116,365.54/252,111.27
  6. Step 6: Final answer
    x = 218,138.27

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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.