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Finding the Fourth Proportional to 229,640.72, 344,619.96 and 89,400.08

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Solution

The fourth proportional to 229,640.72, 344,619.96 and 89,400.08 is: 134,161.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,640.72 : 344,619.96 = 89,400.08 : x
  2. Step 2: Convert to fraction form
    229,640.72/344,619.96 = 89,400.08/x
  3. Step 3: Cross multiply
    229,640.72x = 344,619.96 × 89,400.08
  4. Step 4: Simplify right side
    229,640.72x = 30,809,051,993.60
  5. Step 5: Solve for x
    x = 30,809,051,993.60/229,640.72
  6. Step 6: Final answer
    x = 134,161.97

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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.