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Finding the Fourth Proportional to 279,819.30, 419,728.95 and 236,516.70

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Solution

The fourth proportional to 279,819.30, 419,728.95 and 236,516.70 is: 354,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,819.30 : 419,728.95 = 236,516.70 : x
  2. Step 2: Convert to fraction form
    279,819.30/419,728.95 = 236,516.70/x
  3. Step 3: Cross multiply
    279,819.30x = 419,728.95 × 236,516.70
  4. Step 4: Simplify right side
    279,819.30x = 99,272,906,148.47
  5. Step 5: Solve for x
    x = 99,272,906,148.47/279,819.30
  6. Step 6: Final answer
    x = 354,775.05

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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.