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Finding the Fourth Proportional to 217,842.06, 300,640.23 and 122,367.90

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Solution

The fourth proportional to 217,842.06, 300,640.23 and 122,367.90 is: 168,877.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,842.06 : 300,640.23 = 122,367.90 : x
  2. Step 2: Convert to fraction form
    217,842.06/300,640.23 = 122,367.90/x
  3. Step 3: Cross multiply
    217,842.06x = 300,640.23 × 122,367.90
  4. Step 4: Simplify right side
    217,842.06x = 36,788,713,600.62
  5. Step 5: Solve for x
    x = 36,788,713,600.62/217,842.06
  6. Step 6: Final answer
    x = 168,877.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.