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Finding the Fourth Proportional to 400,449.79, 552,620.97 and 219,161.66

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Solution

The fourth proportional to 400,449.79, 552,620.97 and 219,161.66 is: 302,443.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,449.79 : 552,620.97 = 219,161.66 : x
  2. Step 2: Convert to fraction form
    400,449.79/552,620.97 = 219,161.66/x
  3. Step 3: Cross multiply
    400,449.79x = 552,620.97 × 219,161.66
  4. Step 4: Simplify right side
    400,449.79x = 121,113,329,136.01
  5. Step 5: Solve for x
    x = 121,113,329,136.01/400,449.79
  6. Step 6: Final answer
    x = 302,443.23

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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.