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Finding the Fourth Proportional to 205,673.80, 308,165.10 and 100,265.80

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Solution

The fourth proportional to 205,673.80, 308,165.10 and 100,265.80 is: 150,230.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,673.80 : 308,165.10 = 100,265.80 : x
  2. Step 2: Convert to fraction form
    205,673.80/308,165.10 = 100,265.80/x
  3. Step 3: Cross multiply
    205,673.80x = 308,165.10 × 100,265.80
  4. Step 4: Simplify right side
    205,673.80x = 30,898,420,283.58
  5. Step 5: Solve for x
    x = 30,898,420,283.58/205,673.80
  6. Step 6: Final answer
    x = 150,230.22

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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.