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Finding the Fourth Proportional to 172,396.80, 258,595.20 and 149,587.20

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Solution

The fourth proportional to 172,396.80, 258,595.20 and 149,587.20 is: 224,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,396.80 : 258,595.20 = 149,587.20 : x
  2. Step 2: Convert to fraction form
    172,396.80/258,595.20 = 149,587.20/x
  3. Step 3: Cross multiply
    172,396.80x = 258,595.20 × 149,587.20
  4. Step 4: Simplify right side
    172,396.80x = 38,682,531,901.44
  5. Step 5: Solve for x
    x = 38,682,531,901.44/172,396.80
  6. Step 6: Final answer
    x = 224,380.80

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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.