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Finding the Fourth Proportional to 220,804.40, 331,206.60 and 132,330.80

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Solution

The fourth proportional to 220,804.40, 331,206.60 and 132,330.80 is: 198,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,804.40 : 331,206.60 = 132,330.80 : x
  2. Step 2: Convert to fraction form
    220,804.40/331,206.60 = 132,330.80/x
  3. Step 3: Cross multiply
    220,804.40x = 331,206.60 × 132,330.80
  4. Step 4: Simplify right side
    220,804.40x = 43,828,834,343.28
  5. Step 5: Solve for x
    x = 43,828,834,343.28/220,804.40
  6. Step 6: Final answer
    x = 198,496.20

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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.