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Finding the Fourth Proportional to 217,229.77, 325,420.45 and 103,215.32

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Solution

The fourth proportional to 217,229.77, 325,420.45 and 103,215.32 is: 154,621.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,229.77 : 325,420.45 = 103,215.32 : x
  2. Step 2: Convert to fraction form
    217,229.77/325,420.45 = 103,215.32/x
  3. Step 3: Cross multiply
    217,229.77x = 325,420.45 × 103,215.32
  4. Step 4: Simplify right side
    217,229.77x = 33,588,375,881.29
  5. Step 5: Solve for x
    x = 33,588,375,881.29/217,229.77
  6. Step 6: Final answer
    x = 154,621.42

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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.