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Finding the Fourth Proportional to 323,799.19, 485,699.69 and 113,387.92

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Solution

The fourth proportional to 323,799.19, 485,699.69 and 113,387.92 is: 170,082.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,799.19 : 485,699.69 = 113,387.92 : x
  2. Step 2: Convert to fraction form
    323,799.19/485,699.69 = 113,387.92/x
  3. Step 3: Cross multiply
    323,799.19x = 485,699.69 × 113,387.92
  4. Step 4: Simplify right side
    323,799.19x = 55,072,475,023.51
  5. Step 5: Solve for x
    x = 55,072,475,023.51/323,799.19
  6. Step 6: Final answer
    x = 170,082.19

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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.