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Finding the Fourth Proportional to 217,522.65, 300,183.30 and 122,031.39

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Solution

The fourth proportional to 217,522.65, 300,183.30 and 122,031.39 is: 168,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,522.65 : 300,183.30 = 122,031.39 : x
  2. Step 2: Convert to fraction form
    217,522.65/300,183.30 = 122,031.39/x
  3. Step 3: Cross multiply
    217,522.65x = 300,183.30 × 122,031.39
  4. Step 4: Simplify right side
    217,522.65x = 36,631,785,353.79
  5. Step 5: Solve for x
    x = 36,631,785,353.79/217,522.65
  6. Step 6: Final answer
    x = 168,404.46

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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.