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Finding the Fourth Proportional to 220,488.36, 330,734.37 and 70,729.89

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Solution

The fourth proportional to 220,488.36, 330,734.37 and 70,729.89 is: 106,095.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,488.36 : 330,734.37 = 70,729.89 : x
  2. Step 2: Convert to fraction form
    220,488.36/330,734.37 = 70,729.89/x
  3. Step 3: Cross multiply
    220,488.36x = 330,734.37 × 70,729.89
  4. Step 4: Simplify right side
    220,488.36x = 23,392,806,259.33
  5. Step 5: Solve for x
    x = 23,392,806,259.33/220,488.36
  6. Step 6: Final answer
    x = 106,095.42

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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.