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Finding the Fourth Proportional to 309,489.15, 464,194.19 and 119,819.76

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Solution

The fourth proportional to 309,489.15, 464,194.19 and 119,819.76 is: 179,714.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,489.15 : 464,194.19 = 119,819.76 : x
  2. Step 2: Convert to fraction form
    309,489.15/464,194.19 = 119,819.76/x
  3. Step 3: Cross multiply
    309,489.15x = 464,194.19 × 119,819.76
  4. Step 4: Simplify right side
    309,489.15x = 55,619,634,998.02
  5. Step 5: Solve for x
    x = 55,619,634,998.02/309,489.15
  6. Step 6: Final answer
    x = 179,714.33

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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.