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Finding the Fourth Proportional to 217,024.68, 299,512.90 and 121,529.64

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Solution

The fourth proportional to 217,024.68, 299,512.90 and 121,529.64 is: 167,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,024.68 : 299,512.90 = 121,529.64 : x
  2. Step 2: Convert to fraction form
    217,024.68/299,512.90 = 121,529.64/x
  3. Step 3: Cross multiply
    217,024.68x = 299,512.90 × 121,529.64
  4. Step 4: Simplify right side
    217,024.68x = 36,399,694,912.36
  5. Step 5: Solve for x
    x = 36,399,694,912.36/217,024.68
  6. Step 6: Final answer
    x = 167,721.45

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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.