Home / 521,139.03-781,843.31-305,180.15

Finding the Fourth Proportional to 521,139.03, 781,843.31 and 305,180.15

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Solution

The fourth proportional to 521,139.03, 781,843.31 and 305,180.15 is: 457,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,139.03 : 781,843.31 = 305,180.15 : x
  2. Step 2: Convert to fraction form
    521,139.03/781,843.31 = 305,180.15/x
  3. Step 3: Cross multiply
    521,139.03x = 781,843.31 × 305,180.15
  4. Step 4: Simplify right side
    521,139.03x = 238,603,053,187.18
  5. Step 5: Solve for x
    x = 238,603,053,187.18/521,139.03
  6. Step 6: Final answer
    x = 457,849.13

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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.