Home / 399,734.39-551,634.91-218,449.10

Finding the Fourth Proportional to 399,734.39, 551,634.91 and 218,449.10

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Solution

The fourth proportional to 399,734.39, 551,634.91 and 218,449.10 is: 301,460.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,734.39 : 551,634.91 = 218,449.10 : x
  2. Step 2: Convert to fraction form
    399,734.39/551,634.91 = 218,449.10/x
  3. Step 3: Cross multiply
    399,734.39x = 551,634.91 × 218,449.10
  4. Step 4: Simplify right side
    399,734.39x = 120,504,150,451.05
  5. Step 5: Solve for x
    x = 120,504,150,451.05/399,734.39
  6. Step 6: Final answer
    x = 301,460.55

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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.