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Finding the Fourth Proportional to 217,228.77, 325,418.95 and 103,214.32

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Solution

The fourth proportional to 217,228.77, 325,418.95 and 103,214.32 is: 154,619.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,228.77 : 325,418.95 = 103,214.32 : x
  2. Step 2: Convert to fraction form
    217,228.77/325,418.95 = 103,214.32/x
  3. Step 3: Cross multiply
    217,228.77x = 325,418.95 × 103,214.32
  4. Step 4: Simplify right side
    217,228.77x = 33,587,894,954.83
  5. Step 5: Solve for x
    x = 33,587,894,954.83/217,228.77
  6. Step 6: Final answer
    x = 154,619.92

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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.