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Finding the Fourth Proportional to 379,770.28, 569,157.18 and 279,460.84

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Solution

The fourth proportional to 379,770.28, 569,157.18 and 279,460.84 is: 418,824.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,770.28 : 569,157.18 = 279,460.84 : x
  2. Step 2: Convert to fraction form
    379,770.28/569,157.18 = 279,460.84/x
  3. Step 3: Cross multiply
    379,770.28x = 569,157.18 × 279,460.84
  4. Step 4: Simplify right side
    379,770.28x = 159,057,143,614.83
  5. Step 5: Solve for x
    x = 159,057,143,614.83/379,770.28
  6. Step 6: Final answer
    x = 418,824.62

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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.