Home / 309,022.67-426,494.49-223,259.21

Finding the Fourth Proportional to 309,022.67, 426,494.49 and 223,259.21

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Solution

The fourth proportional to 309,022.67, 426,494.49 and 223,259.21 is: 308,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,022.67 : 426,494.49 = 223,259.21 : x
  2. Step 2: Convert to fraction form
    309,022.67/426,494.49 = 223,259.21/x
  3. Step 3: Cross multiply
    309,022.67x = 426,494.49 × 223,259.21
  4. Step 4: Simplify right side
    309,022.67x = 95,218,822,906.75
  5. Step 5: Solve for x
    x = 95,218,822,906.75/309,022.67
  6. Step 6: Final answer
    x = 308,128.92

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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.