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Finding the Fourth Proportional to 217,027.76, 299,489.91 and 121,529.57

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Solution

The fourth proportional to 217,027.76, 299,489.91 and 121,529.57 is: 167,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,027.76 : 299,489.91 = 121,529.57 : x
  2. Step 2: Convert to fraction form
    217,027.76/299,489.91 = 121,529.57/x
  3. Step 3: Cross multiply
    217,027.76x = 299,489.91 × 121,529.57
  4. Step 4: Simplify right side
    217,027.76x = 36,396,878,028.45
  5. Step 5: Solve for x
    x = 36,396,878,028.45/217,027.76
  6. Step 6: Final answer
    x = 167,706.10

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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.