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Finding the Fourth Proportional to 220,489.29, 330,735.76 and 70,729.81

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Solution

The fourth proportional to 220,489.29, 330,735.76 and 70,729.81 is: 106,095.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,489.29 : 330,735.76 = 70,729.81 : x
  2. Step 2: Convert to fraction form
    220,489.29/330,735.76 = 70,729.81/x
  3. Step 3: Cross multiply
    220,489.29x = 330,735.76 × 70,729.81
  4. Step 4: Simplify right side
    220,489.29x = 23,392,876,461.34
  5. Step 5: Solve for x
    x = 23,392,876,461.34/220,489.29
  6. Step 6: Final answer
    x = 106,095.30

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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.