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Finding the Fourth Proportional to 217,120.88, 299,626.81 and 121,627.55

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Solution

The fourth proportional to 217,120.88, 299,626.81 and 121,627.55 is: 167,846.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,120.88 : 299,626.81 = 121,627.55 : x
  2. Step 2: Convert to fraction form
    217,120.88/299,626.81 = 121,627.55/x
  3. Step 3: Cross multiply
    217,120.88x = 299,626.81 × 121,627.55
  4. Step 4: Simplify right side
    217,120.88x = 36,442,873,012.41
  5. Step 5: Solve for x
    x = 36,442,873,012.41/217,120.88
  6. Step 6: Final answer
    x = 167,846.01

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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.