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Finding the Fourth Proportional to 299,666.60, 449,435.10 and 131,186.60

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Solution

The fourth proportional to 299,666.60, 449,435.10 and 131,186.60 is: 196,751.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,666.60 : 449,435.10 = 131,186.60 : x
  2. Step 2: Convert to fraction form
    299,666.60/449,435.10 = 131,186.60/x
  3. Step 3: Cross multiply
    299,666.60x = 449,435.10 × 131,186.60
  4. Step 4: Simplify right side
    299,666.60x = 58,959,862,689.66
  5. Step 5: Solve for x
    x = 58,959,862,689.66/299,666.60
  6. Step 6: Final answer
    x = 196,751.53

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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.