Home / 400,222.78-552,320.62-218,930.56

Finding the Fourth Proportional to 400,222.78, 552,320.62 and 218,930.56

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Solution

The fourth proportional to 400,222.78, 552,320.62 and 218,930.56 is: 302,131.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,222.78 : 552,320.62 = 218,930.56 : x
  2. Step 2: Convert to fraction form
    400,222.78/552,320.62 = 218,930.56/x
  3. Step 3: Cross multiply
    400,222.78x = 552,320.62 × 218,930.56
  4. Step 4: Simplify right side
    400,222.78x = 120,919,860,708.02
  5. Step 5: Solve for x
    x = 120,919,860,708.02/400,222.78
  6. Step 6: Final answer
    x = 302,131.38

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1.5x scale

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.