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Finding the Fourth Proportional to 323,819.64, 485,435.43 and 113,342.76

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Solution

The fourth proportional to 323,819.64, 485,435.43 and 113,342.76 is: 169,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,819.64 : 485,435.43 = 113,342.76 : x
  2. Step 2: Convert to fraction form
    323,819.64/485,435.43 = 113,342.76/x
  3. Step 3: Cross multiply
    323,819.64x = 485,435.43 × 113,342.76
  4. Step 4: Simplify right side
    323,819.64x = 55,020,591,437.99
  5. Step 5: Solve for x
    x = 55,020,591,437.99/323,819.64
  6. Step 6: Final answer
    x = 169,911.22

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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.