Home / 252,972.80-378,998.40-205,971.20

Finding the Fourth Proportional to 252,972.80, 378,998.40 and 205,971.20

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Solution

The fourth proportional to 252,972.80, 378,998.40 and 205,971.20 is: 308,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,972.80 : 378,998.40 = 205,971.20 : x
  2. Step 2: Convert to fraction form
    252,972.80/378,998.40 = 205,971.20/x
  3. Step 3: Cross multiply
    252,972.80x = 378,998.40 × 205,971.20
  4. Step 4: Simplify right side
    252,972.80x = 78,062,755,246.08
  5. Step 5: Solve for x
    x = 78,062,755,246.08/252,972.80
  6. Step 6: Final answer
    x = 308,581.62

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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.