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Finding the Fourth Proportional to 290,535.39, 400,976.29 and 163,235.59

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Solution

The fourth proportional to 290,535.39, 400,976.29 and 163,235.59 is: 225,286.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,535.39 : 400,976.29 = 163,235.59 : x
  2. Step 2: Convert to fraction form
    290,535.39/400,976.29 = 163,235.59/x
  3. Step 3: Cross multiply
    290,535.39x = 400,976.29 × 163,235.59
  4. Step 4: Simplify right side
    290,535.39x = 65,453,601,274.16
  5. Step 5: Solve for x
    x = 65,453,601,274.16/290,535.39
  6. Step 6: Final answer
    x = 225,286.16

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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.