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Finding the Fourth Proportional to 172,204.60, 257,577.90 and 154,562.80

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Solution

The fourth proportional to 172,204.60, 257,577.90 and 154,562.80 is: 231,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,204.60 : 257,577.90 = 154,562.80 : x
  2. Step 2: Convert to fraction form
    172,204.60/257,577.90 = 154,562.80/x
  3. Step 3: Cross multiply
    172,204.60x = 257,577.90 × 154,562.80
  4. Step 4: Simplify right side
    172,204.60x = 39,811,961,442.12
  5. Step 5: Solve for x
    x = 39,811,961,442.12/172,204.60
  6. Step 6: Final answer
    x = 231,189.88

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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.