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Finding the Fourth Proportional to 203,220.27, 304,718.40 and 69,990.66

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Solution

The fourth proportional to 203,220.27, 304,718.40 and 69,990.66 is: 104,947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,220.27 : 304,718.40 = 69,990.66 : x
  2. Step 2: Convert to fraction form
    203,220.27/304,718.40 = 69,990.66/x
  3. Step 3: Cross multiply
    203,220.27x = 304,718.40 × 69,990.66
  4. Step 4: Simplify right side
    203,220.27x = 21,327,441,930.14
  5. Step 5: Solve for x
    x = 21,327,441,930.14/203,220.27
  6. Step 6: Final answer
    x = 104,947.41

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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.