Home / 217,404.35-300,021.10-131,351.39

Finding the Fourth Proportional to 217,404.35, 300,021.10 and 131,351.39

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Solution

The fourth proportional to 217,404.35, 300,021.10 and 131,351.39 is: 181,266.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,404.35 : 300,021.10 = 131,351.39 : x
  2. Step 2: Convert to fraction form
    217,404.35/300,021.10 = 131,351.39/x
  3. Step 3: Cross multiply
    217,404.35x = 300,021.10 × 131,351.39
  4. Step 4: Simplify right side
    217,404.35x = 39,408,186,685.85
  5. Step 5: Solve for x
    x = 39,408,186,685.85/217,404.35
  6. Step 6: Final answer
    x = 181,266.79

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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.