Home / 400,131.78-552,161.39-218,808.47

Finding the Fourth Proportional to 400,131.78, 552,161.39 and 218,808.47

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Solution

The fourth proportional to 400,131.78, 552,161.39 and 218,808.47 is: 301,944.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,131.78 : 552,161.39 = 218,808.47 : x
  2. Step 2: Convert to fraction form
    400,131.78/552,161.39 = 218,808.47/x
  3. Step 3: Cross multiply
    400,131.78x = 552,161.39 × 218,808.47
  4. Step 4: Simplify right side
    400,131.78x = 120,817,585,084.12
  5. Step 5: Solve for x
    x = 120,817,585,084.12/400,131.78
  6. Step 6: Final answer
    x = 301,944.49

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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.