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Finding the Fourth Proportional to 262,610.70, 393,391.77 and 202,428.78

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Solution

The fourth proportional to 262,610.70, 393,391.77 and 202,428.78 is: 303,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,610.70 : 393,391.77 = 202,428.78 : x
  2. Step 2: Convert to fraction form
    262,610.70/393,391.77 = 202,428.78/x
  3. Step 3: Cross multiply
    262,610.70x = 393,391.77 × 202,428.78
  4. Step 4: Simplify right side
    262,610.70x = 79,633,816,063.14
  5. Step 5: Solve for x
    x = 79,633,816,063.14/262,610.70
  6. Step 6: Final answer
    x = 303,239.04

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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.