Home / 412,261.35-618,375.86-172,313.28

Finding the Fourth Proportional to 412,261.35, 618,375.86 and 172,313.28

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Solution

The fourth proportional to 412,261.35, 618,375.86 and 172,313.28 is: 258,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,261.35 : 618,375.86 = 172,313.28 : x
  2. Step 2: Convert to fraction form
    412,261.35/618,375.86 = 172,313.28/x
  3. Step 3: Cross multiply
    412,261.35x = 618,375.86 × 172,313.28
  4. Step 4: Simplify right side
    412,261.35x = 106,554,371,847.85
  5. Step 5: Solve for x
    x = 106,554,371,847.85/412,261.35
  6. Step 6: Final answer
    x = 258,463.16

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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.