Home / 259,868.74-389,802.38-101,986.78

Finding the Fourth Proportional to 259,868.74, 389,802.38 and 101,986.78

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Solution

The fourth proportional to 259,868.74, 389,802.38 and 101,986.78 is: 152,979.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,868.74 : 389,802.38 = 101,986.78 : x
  2. Step 2: Convert to fraction form
    259,868.74/389,802.38 = 101,986.78/x
  3. Step 3: Cross multiply
    259,868.74x = 389,802.38 × 101,986.78
  4. Step 4: Simplify right side
    259,868.74x = 39,754,689,572.54
  5. Step 5: Solve for x
    x = 39,754,689,572.54/259,868.74
  6. Step 6: Final answer
    x = 152,979.88

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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.