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Finding the Fourth Proportional to 309,220.33, 426,854.69 and 201,882.37

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Solution

The fourth proportional to 309,220.33, 426,854.69 and 201,882.37 is: 278,682.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,220.33 : 426,854.69 = 201,882.37 : x
  2. Step 2: Convert to fraction form
    309,220.33/426,854.69 = 201,882.37/x
  3. Step 3: Cross multiply
    309,220.33x = 426,854.69 × 201,882.37
  4. Step 4: Simplify right side
    309,220.33x = 86,174,435,143.33
  5. Step 5: Solve for x
    x = 86,174,435,143.33/309,220.33
  6. Step 6: Final answer
    x = 278,682.96

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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.