Home / 485,975.13-670,645.97-271,115.20

Finding the Fourth Proportional to 485,975.13, 670,645.97 and 271,115.20

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Solution

The fourth proportional to 485,975.13, 670,645.97 and 271,115.20 is: 374,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,975.13 : 670,645.97 = 271,115.20 : x
  2. Step 2: Convert to fraction form
    485,975.13/670,645.97 = 271,115.20/x
  3. Step 3: Cross multiply
    485,975.13x = 670,645.97 × 271,115.20
  4. Step 4: Simplify right side
    485,975.13x = 181,822,311,576.94
  5. Step 5: Solve for x
    x = 181,822,311,576.94/485,975.13
  6. Step 6: Final answer
    x = 374,139.13

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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.