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Finding the Fourth Proportional to 217,522.67, 300,176.76 and 120,720.90

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Solution

The fourth proportional to 217,522.67, 300,176.76 and 120,720.90 is: 166,592.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,522.67 : 300,176.76 = 120,720.90 : x
  2. Step 2: Convert to fraction form
    217,522.67/300,176.76 = 120,720.90/x
  3. Step 3: Cross multiply
    217,522.67x = 300,176.76 × 120,720.90
  4. Step 4: Simplify right side
    217,522.67x = 36,237,608,858.84
  5. Step 5: Solve for x
    x = 36,237,608,858.84/217,522.67
  6. Step 6: Final answer
    x = 166,592.33

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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.