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Finding the Fourth Proportional to 217,299.34, 325,867.08 and 90,948.34

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Solution

The fourth proportional to 217,299.34, 325,867.08 and 90,948.34 is: 136,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,299.34 : 325,867.08 = 90,948.34 : x
  2. Step 2: Convert to fraction form
    217,299.34/325,867.08 = 90,948.34/x
  3. Step 3: Cross multiply
    217,299.34x = 325,867.08 × 90,948.34
  4. Step 4: Simplify right side
    217,299.34x = 29,637,068,357.31
  5. Step 5: Solve for x
    x = 29,637,068,357.31/217,299.34
  6. Step 6: Final answer
    x = 136,388.21

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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.