Home / 252,309.36-378,399.48-74,774.88

Finding the Fourth Proportional to 252,309.36, 378,399.48 and 74,774.88

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Solution

The fourth proportional to 252,309.36, 378,399.48 and 74,774.88 is: 112,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,309.36 : 378,399.48 = 74,774.88 : x
  2. Step 2: Convert to fraction form
    252,309.36/378,399.48 = 74,774.88/x
  3. Step 3: Cross multiply
    252,309.36x = 378,399.48 × 74,774.88
  4. Step 4: Simplify right side
    252,309.36x = 28,294,775,709.06
  5. Step 5: Solve for x
    x = 28,294,775,709.06/252,309.36
  6. Step 6: Final answer
    x = 112,143.19

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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.