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Finding the Fourth Proportional to 290,960.28, 401,521.32 and 163,635.87

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Solution

The fourth proportional to 290,960.28, 401,521.32 and 163,635.87 is: 225,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,960.28 : 401,521.32 = 163,635.87 : x
  2. Step 2: Convert to fraction form
    290,960.28/401,521.32 = 163,635.87/x
  3. Step 3: Cross multiply
    290,960.28x = 401,521.32 × 163,635.87
  4. Step 4: Simplify right side
    290,960.28x = 65,703,290,521.75
  5. Step 5: Solve for x
    x = 65,703,290,521.75/290,960.28
  6. Step 6: Final answer
    x = 225,815.33

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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.