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Finding the Fourth Proportional to 217,796.55, 300,574.17 and 121,012.08

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Solution

The fourth proportional to 217,796.55, 300,574.17 and 121,012.08 is: 167,004.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,796.55 : 300,574.17 = 121,012.08 : x
  2. Step 2: Convert to fraction form
    217,796.55/300,574.17 = 121,012.08/x
  3. Step 3: Cross multiply
    217,796.55x = 300,574.17 × 121,012.08
  4. Step 4: Simplify right side
    217,796.55x = 36,373,105,505.97
  5. Step 5: Solve for x
    x = 36,373,105,505.97/217,796.55
  6. Step 6: Final answer
    x = 167,004.97

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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.