Home / 400,419.72-552,579.24-219,131.64

Finding the Fourth Proportional to 400,419.72, 552,579.24 and 219,131.64

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Solution

The fourth proportional to 400,419.72, 552,579.24 and 219,131.64 is: 302,401.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,419.72 : 552,579.24 = 219,131.64 : x
  2. Step 2: Convert to fraction form
    400,419.72/552,579.24 = 219,131.64/x
  3. Step 3: Cross multiply
    400,419.72x = 552,579.24 × 219,131.64
  4. Step 4: Simplify right side
    400,419.72x = 121,087,595,091.15
  5. Step 5: Solve for x
    x = 121,087,595,091.15/400,419.72
  6. Step 6: Final answer
    x = 302,401.68

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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.