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Finding the Fourth Proportional to 323,870.12, 485,805.20 and 113,508.04

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Solution

The fourth proportional to 323,870.12, 485,805.20 and 113,508.04 is: 170,262.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,870.12 : 485,805.20 = 113,508.04 : x
  2. Step 2: Convert to fraction form
    323,870.12/485,805.20 = 113,508.04/x
  3. Step 3: Cross multiply
    323,870.12x = 485,805.20 × 113,508.04
  4. Step 4: Simplify right side
    323,870.12x = 55,142,796,073.81
  5. Step 5: Solve for x
    x = 55,142,796,073.81/323,870.12
  6. Step 6: Final answer
    x = 170,262.07

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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.