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Finding the Fourth Proportional to 217,247.82, 299,814.32 and 121,760.68

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Solution

The fourth proportional to 217,247.82, 299,814.32 and 121,760.68 is: 168,036.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,247.82 : 299,814.32 = 121,760.68 : x
  2. Step 2: Convert to fraction form
    217,247.82/299,814.32 = 121,760.68/x
  3. Step 3: Cross multiply
    217,247.82x = 299,814.32 × 121,760.68
  4. Step 4: Simplify right side
    217,247.82x = 36,505,595,031.80
  5. Step 5: Solve for x
    x = 36,505,595,031.80/217,247.82
  6. Step 6: Final answer
    x = 168,036.65

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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.