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Finding the Fourth Proportional to 297,253.95, 445,881.27 and 126,431.43

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Solution

The fourth proportional to 297,253.95, 445,881.27 and 126,431.43 is: 189,647.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,253.95 : 445,881.27 = 126,431.43 : x
  2. Step 2: Convert to fraction form
    297,253.95/445,881.27 = 126,431.43/x
  3. Step 3: Cross multiply
    297,253.95x = 445,881.27 × 126,431.43
  4. Step 4: Simplify right side
    297,253.95x = 56,373,404,346.91
  5. Step 5: Solve for x
    x = 56,373,404,346.91/297,253.95
  6. Step 6: Final answer
    x = 189,647.29

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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.