Home / 399,022.20-550,663.92-217,744.11

Finding the Fourth Proportional to 399,022.20, 550,663.92 and 217,744.11

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Solution

The fourth proportional to 399,022.20, 550,663.92 and 217,744.11 is: 300,494.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,022.20 : 550,663.92 = 217,744.11 : x
  2. Step 2: Convert to fraction form
    399,022.20/550,663.92 = 217,744.11/x
  3. Step 3: Cross multiply
    399,022.20x = 550,663.92 × 217,744.11
  4. Step 4: Simplify right side
    399,022.20x = 119,903,825,169.51
  5. Step 5: Solve for x
    x = 119,903,825,169.51/399,022.20
  6. Step 6: Final answer
    x = 300,494.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.