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Finding the Fourth Proportional to 323,806.08, 485,415.08 and 113,329.20

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Solution

The fourth proportional to 323,806.08, 485,415.08 and 113,329.20 is: 169,890.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,806.08 : 485,415.08 = 113,329.20 : x
  2. Step 2: Convert to fraction form
    323,806.08/485,415.08 = 113,329.20/x
  3. Step 3: Cross multiply
    323,806.08x = 485,415.08 × 113,329.20
  4. Step 4: Simplify right side
    323,806.08x = 55,011,702,684.34
  5. Step 5: Solve for x
    x = 55,011,702,684.34/323,806.08
  6. Step 6: Final answer
    x = 169,890.89

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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.