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Finding the Fourth Proportional to 321,572.27, 482,362.49 and 121,839.01

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Solution

The fourth proportional to 321,572.27, 482,362.49 and 121,839.01 is: 182,760.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,572.27 : 482,362.49 = 121,839.01 : x
  2. Step 2: Convert to fraction form
    321,572.27/482,362.49 = 121,839.01/x
  3. Step 3: Cross multiply
    321,572.27x = 482,362.49 × 121,839.01
  4. Step 4: Simplify right side
    321,572.27x = 58,770,567,341.43
  5. Step 5: Solve for x
    x = 58,770,567,341.43/321,572.27
  6. Step 6: Final answer
    x = 182,760.06

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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.