Home / 290,724.11-401,189.92-161,661.95

Finding the Fourth Proportional to 290,724.11, 401,189.92 and 161,661.95

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Solution

The fourth proportional to 290,724.11, 401,189.92 and 161,661.95 is: 223,088.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,724.11 : 401,189.92 = 161,661.95 : x
  2. Step 2: Convert to fraction form
    290,724.11/401,189.92 = 161,661.95/x
  3. Step 3: Cross multiply
    290,724.11x = 401,189.92 × 161,661.95
  4. Step 4: Simplify right side
    290,724.11x = 64,857,142,377.44
  5. Step 5: Solve for x
    x = 64,857,142,377.44/290,724.11
  6. Step 6: Final answer
    x = 223,088.29

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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.