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Finding the Fourth Proportional to 202,387.40, 303,338.10 and 83,997.80

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Solution

The fourth proportional to 202,387.40, 303,338.10 and 83,997.80 is: 125,895.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,387.40 : 303,338.10 = 83,997.80 : x
  2. Step 2: Convert to fraction form
    202,387.40/303,338.10 = 83,997.80/x
  3. Step 3: Cross multiply
    202,387.40x = 303,338.10 × 83,997.80
  4. Step 4: Simplify right side
    202,387.40x = 25,479,733,056.18
  5. Step 5: Solve for x
    x = 25,479,733,056.18/202,387.40
  6. Step 6: Final answer
    x = 125,895.85

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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.