Home / 278,833.68-384,789.42-157,974.48

Finding the Fourth Proportional to 278,833.68, 384,789.42 and 157,974.48

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Solution

The fourth proportional to 278,833.68, 384,789.42 and 157,974.48 is: 218,004.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,833.68 : 384,789.42 = 157,974.48 : x
  2. Step 2: Convert to fraction form
    278,833.68/384,789.42 = 157,974.48/x
  3. Step 3: Cross multiply
    278,833.68x = 384,789.42 × 157,974.48
  4. Step 4: Simplify right side
    278,833.68x = 60,786,908,534.00
  5. Step 5: Solve for x
    x = 60,786,908,534.00/278,833.68
  6. Step 6: Final answer
    x = 218,004.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.