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Finding the Fourth Proportional to 217,885.64, 326,662.38 and 112,637.48

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Solution

The fourth proportional to 217,885.64, 326,662.38 and 112,637.48 is: 168,870.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,885.64 : 326,662.38 = 112,637.48 : x
  2. Step 2: Convert to fraction form
    217,885.64/326,662.38 = 112,637.48/x
  3. Step 3: Cross multiply
    217,885.64x = 326,662.38 × 112,637.48
  4. Step 4: Simplify right side
    217,885.64x = 36,794,427,294.00
  5. Step 5: Solve for x
    x = 36,794,427,294.00/217,885.64
  6. Step 6: Final answer
    x = 168,870.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.