Home / 424,018.05-635,778-171,306.56

Finding the Fourth Proportional to 424,018.05, 635,778 and 171,306.56

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Solution

The fourth proportional to 424,018.05, 635,778 and 171,306.56 is: 256,859.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,018.05 : 635,778 = 171,306.56 : x
  2. Step 2: Convert to fraction form
    424,018.05/635,778 = 171,306.56/x
  3. Step 3: Cross multiply
    424,018.05x = 635,778 × 171,306.56
  4. Step 4: Simplify right side
    424,018.05x = 108,912,942,103.68
  5. Step 5: Solve for x
    x = 108,912,942,103.68/424,018.05
  6. Step 6: Final answer
    x = 256,859.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.