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Finding the Fourth Proportional to 400,121.80, 600,344.91 and 175,363.81

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Solution

The fourth proportional to 400,121.80, 600,344.91 and 175,363.81 is: 263,116.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,121.80 : 600,344.91 = 175,363.81 : x
  2. Step 2: Convert to fraction form
    400,121.80/600,344.91 = 175,363.81/x
  3. Step 3: Cross multiply
    400,121.80x = 600,344.91 × 175,363.81
  4. Step 4: Simplify right side
    400,121.80x = 105,278,769,230.85
  5. Step 5: Solve for x
    x = 105,278,769,230.85/400,121.80
  6. Step 6: Final answer
    x = 263,116.81

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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.