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Finding the Fourth Proportional to 323,204.07, 484,806.15 and 86,540.70

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Solution

The fourth proportional to 323,204.07, 484,806.15 and 86,540.70 is: 129,811.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,204.07 : 484,806.15 = 86,540.70 : x
  2. Step 2: Convert to fraction form
    323,204.07/484,806.15 = 86,540.70/x
  3. Step 3: Cross multiply
    323,204.07x = 484,806.15 × 86,540.70
  4. Step 4: Simplify right side
    323,204.07x = 41,955,463,585.31
  5. Step 5: Solve for x
    x = 41,955,463,585.31/323,204.07
  6. Step 6: Final answer
    x = 129,811.06

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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.