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Finding the Fourth Proportional to 217,086.94, 299,585.82 and 121,591.54

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Solution

The fourth proportional to 217,086.94, 299,585.82 and 121,591.54 is: 167,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,086.94 : 299,585.82 = 121,591.54 : x
  2. Step 2: Convert to fraction form
    217,086.94/299,585.82 = 121,591.54/x
  3. Step 3: Cross multiply
    217,086.94x = 299,585.82 × 121,591.54
  4. Step 4: Simplify right side
    217,086.94x = 36,427,101,215.96
  5. Step 5: Solve for x
    x = 36,427,101,215.96/217,086.94
  6. Step 6: Final answer
    x = 167,799.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.