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Finding the Fourth Proportional to 379,747.30, 569,122.66 and 279,437.80

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Solution

The fourth proportional to 379,747.30, 569,122.66 and 279,437.80 is: 418,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,747.30 : 569,122.66 = 279,437.80 : x
  2. Step 2: Convert to fraction form
    379,747.30/569,122.66 = 279,437.80/x
  3. Step 3: Cross multiply
    379,747.30x = 569,122.66 × 279,437.80
  4. Step 4: Simplify right side
    379,747.30x = 159,034,384,040.55
  5. Step 5: Solve for x
    x = 159,034,384,040.55/379,747.30
  6. Step 6: Final answer
    x = 418,790.03

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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.