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Finding the Fourth Proportional to 229,081.90, 343,039.65 and 218,584.30

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Solution

The fourth proportional to 229,081.90, 343,039.65 and 218,584.30 is: 327,319.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,081.90 : 343,039.65 = 218,584.30 : x
  2. Step 2: Convert to fraction form
    229,081.90/343,039.65 = 218,584.30/x
  3. Step 3: Cross multiply
    229,081.90x = 343,039.65 × 218,584.30
  4. Step 4: Simplify right side
    229,081.90x = 74,983,081,767.50
  5. Step 5: Solve for x
    x = 74,983,081,767.50/229,081.90
  6. Step 6: Final answer
    x = 327,319.97

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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.