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Finding the Fourth Proportional to 290,663.83, 401,073.69 and 161,591.95

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Solution

The fourth proportional to 290,663.83, 401,073.69 and 161,591.95 is: 222,973.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,663.83 : 401,073.69 = 161,591.95 : x
  2. Step 2: Convert to fraction form
    290,663.83/401,073.69 = 161,591.95/x
  3. Step 3: Cross multiply
    290,663.83x = 401,073.69 × 161,591.95
  4. Step 4: Simplify right side
    290,663.83x = 64,810,279,660.80
  5. Step 5: Solve for x
    x = 64,810,279,660.80/290,663.83
  6. Step 6: Final answer
    x = 222,973.32

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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.