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Finding the Fourth Proportional to 217,125.90, 325,645.65 and 104,805.90

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Solution

The fourth proportional to 217,125.90, 325,645.65 and 104,805.90 is: 157,188.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,125.90 : 325,645.65 = 104,805.90 : x
  2. Step 2: Convert to fraction form
    217,125.90/325,645.65 = 104,805.90/x
  3. Step 3: Cross multiply
    217,125.90x = 325,645.65 × 104,805.90
  4. Step 4: Simplify right side
    217,125.90x = 34,129,585,429.34
  5. Step 5: Solve for x
    x = 34,129,585,429.34/217,125.90
  6. Step 6: Final answer
    x = 157,188.00

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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.