Home / 400,418.72-552,561.24-219,126.08

Finding the Fourth Proportional to 400,418.72, 552,561.24 and 219,126.08

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Solution

The fourth proportional to 400,418.72, 552,561.24 and 219,126.08 is: 302,384.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,418.72 : 552,561.24 = 219,126.08 : x
  2. Step 2: Convert to fraction form
    400,418.72/552,561.24 = 219,126.08/x
  3. Step 3: Cross multiply
    400,418.72x = 552,561.24 × 219,126.08
  4. Step 4: Simplify right side
    400,418.72x = 121,080,578,481.14
  5. Step 5: Solve for x
    x = 121,080,578,481.14/400,418.72
  6. Step 6: Final answer
    x = 302,384.91

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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.