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Finding the Fourth Proportional to 279,229.55, 418,775.13 and 79,551.67

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Solution

The fourth proportional to 279,229.55, 418,775.13 and 79,551.67 is: 119,307.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,229.55 : 418,775.13 = 79,551.67 : x
  2. Step 2: Convert to fraction form
    279,229.55/418,775.13 = 79,551.67/x
  3. Step 3: Cross multiply
    279,229.55x = 418,775.13 × 79,551.67
  4. Step 4: Simplify right side
    279,229.55x = 33,314,259,170.82
  5. Step 5: Solve for x
    x = 33,314,259,170.82/279,229.55
  6. Step 6: Final answer
    x = 119,307.78

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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.