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Finding the Fourth Proportional to 544,009.20, 815,819.40 and 189,034.80

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Solution

The fourth proportional to 544,009.20, 815,819.40 and 189,034.80 is: 283,484.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,009.20 : 815,819.40 = 189,034.80 : x
  2. Step 2: Convert to fraction form
    544,009.20/815,819.40 = 189,034.80/x
  3. Step 3: Cross multiply
    544,009.20x = 815,819.40 × 189,034.80
  4. Step 4: Simplify right side
    544,009.20x = 154,218,257,115.12
  5. Step 5: Solve for x
    x = 154,218,257,115.12/544,009.20
  6. Step 6: Final answer
    x = 283,484.65

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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.