Home / 412,016.25-618,028.23-145,821.90

Finding the Fourth Proportional to 412,016.25, 618,028.23 and 145,821.90

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Solution

The fourth proportional to 412,016.25, 618,028.23 and 145,821.90 is: 218,734.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,016.25 : 618,028.23 = 145,821.90 : x
  2. Step 2: Convert to fraction form
    412,016.25/618,028.23 = 145,821.90/x
  3. Step 3: Cross multiply
    412,016.25x = 618,028.23 × 145,821.90
  4. Step 4: Simplify right side
    412,016.25x = 90,122,050,752.24
  5. Step 5: Solve for x
    x = 90,122,050,752.24/412,016.25
  6. Step 6: Final answer
    x = 218,734.21

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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.