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Finding the Fourth Proportional to 217,404.72, 300,021.62 and 131,351.76

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Solution

The fourth proportional to 217,404.72, 300,021.62 and 131,351.76 is: 181,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,404.72 : 300,021.62 = 131,351.76 : x
  2. Step 2: Convert to fraction form
    217,404.72/300,021.62 = 131,351.76/x
  3. Step 3: Cross multiply
    217,404.72x = 300,021.62 × 131,351.76
  4. Step 4: Simplify right side
    217,404.72x = 39,408,367,168.29
  5. Step 5: Solve for x
    x = 39,408,367,168.29/217,404.72
  6. Step 6: Final answer
    x = 181,267.30

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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.