Home / 399,822.39-551,753.57-218,534.22

Finding the Fourth Proportional to 399,822.39, 551,753.57 and 218,534.22

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Solution

The fourth proportional to 399,822.39, 551,753.57 and 218,534.22 is: 301,576.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,822.39 : 551,753.57 = 218,534.22 : x
  2. Step 2: Convert to fraction form
    399,822.39/551,753.57 = 218,534.22/x
  3. Step 3: Cross multiply
    399,822.39x = 551,753.57 × 218,534.22
  4. Step 4: Simplify right side
    399,822.39x = 120,577,034,959.49
  5. Step 5: Solve for x
    x = 120,577,034,959.49/399,822.39
  6. Step 6: Final answer
    x = 301,576.49

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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.