Home / 412,542.38-618,990.02-172,712.32

Finding the Fourth Proportional to 412,542.38, 618,990.02 and 172,712.32

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Solution

The fourth proportional to 412,542.38, 618,990.02 and 172,712.32 is: 259,142.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,542.38 : 618,990.02 = 172,712.32 : x
  2. Step 2: Convert to fraction form
    412,542.38/618,990.02 = 172,712.32/x
  3. Step 3: Cross multiply
    412,542.38x = 618,990.02 × 172,712.32
  4. Step 4: Simplify right side
    412,542.38x = 106,907,202,411.05
  5. Step 5: Solve for x
    x = 106,907,202,411.05/412,542.38
  6. Step 6: Final answer
    x = 259,142.35

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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.