Home / 400,642.09-552,864.19-219,318.95

Finding the Fourth Proportional to 400,642.09, 552,864.19 and 219,318.95

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Solution

The fourth proportional to 400,642.09, 552,864.19 and 219,318.95 is: 302,648.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,642.09 : 552,864.19 = 219,318.95 : x
  2. Step 2: Convert to fraction form
    400,642.09/552,864.19 = 219,318.95/x
  3. Step 3: Cross multiply
    400,642.09x = 552,864.19 × 219,318.95
  4. Step 4: Simplify right side
    400,642.09x = 121,253,589,782.49
  5. Step 5: Solve for x
    x = 121,253,589,782.49/400,642.09
  6. Step 6: Final answer
    x = 302,648.16

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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.