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Finding the Fourth Proportional to 253,028.34, 379,486.49 and 73,074.69

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Solution

The fourth proportional to 253,028.34, 379,486.49 and 73,074.69 is: 109,595.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,028.34 : 379,486.49 = 73,074.69 : x
  2. Step 2: Convert to fraction form
    253,028.34/379,486.49 = 73,074.69/x
  3. Step 3: Cross multiply
    253,028.34x = 379,486.49 × 73,074.69
  4. Step 4: Simplify right side
    253,028.34x = 27,730,857,250.56
  5. Step 5: Solve for x
    x = 27,730,857,250.56/253,028.34
  6. Step 6: Final answer
    x = 109,595.85

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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.