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Finding the Fourth Proportional to 220,912.82, 304,863.76 and 122,805.30

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Solution

The fourth proportional to 220,912.82, 304,863.76 and 122,805.30 is: 169,473.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,912.82 : 304,863.76 = 122,805.30 : x
  2. Step 2: Convert to fraction form
    220,912.82/304,863.76 = 122,805.30/x
  3. Step 3: Cross multiply
    220,912.82x = 304,863.76 × 122,805.30
  4. Step 4: Simplify right side
    220,912.82x = 37,438,883,674.60
  5. Step 5: Solve for x
    x = 37,438,883,674.60/220,912.82
  6. Step 6: Final answer
    x = 169,473.57

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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.