Home / 205,375.18-307,361.84-172,132.78

Finding the Fourth Proportional to 205,375.18, 307,361.84 and 172,132.78

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Solution

The fourth proportional to 205,375.18, 307,361.84 and 172,132.78 is: 257,611.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,375.18 : 307,361.84 = 172,132.78 : x
  2. Step 2: Convert to fraction form
    205,375.18/307,361.84 = 172,132.78/x
  3. Step 3: Cross multiply
    205,375.18x = 307,361.84 × 172,132.78
  4. Step 4: Simplify right side
    205,375.18x = 52,907,047,985.12
  5. Step 5: Solve for x
    x = 52,907,047,985.12/205,375.18
  6. Step 6: Final answer
    x = 257,611.69

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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.