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Finding the Fourth Proportional to 202,279.80, 303,419.70 and 69,148.20

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Solution

The fourth proportional to 202,279.80, 303,419.70 and 69,148.20 is: 103,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,279.80 : 303,419.70 = 69,148.20 : x
  2. Step 2: Convert to fraction form
    202,279.80/303,419.70 = 69,148.20/x
  3. Step 3: Cross multiply
    202,279.80x = 303,419.70 × 69,148.20
  4. Step 4: Simplify right side
    202,279.80x = 20,980,926,099.54
  5. Step 5: Solve for x
    x = 20,980,926,099.54/202,279.80
  6. Step 6: Final answer
    x = 103,722.30

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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.