Home / 309,982.26-427,665.48-202,614.30

Finding the Fourth Proportional to 309,982.26, 427,665.48 and 202,614.30

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Solution

The fourth proportional to 309,982.26, 427,665.48 and 202,614.30 is: 279,535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,982.26 : 427,665.48 = 202,614.30 : x
  2. Step 2: Convert to fraction form
    309,982.26/427,665.48 = 202,614.30/x
  3. Step 3: Cross multiply
    309,982.26x = 427,665.48 × 202,614.30
  4. Step 4: Simplify right side
    309,982.26x = 86,651,141,864.36
  5. Step 5: Solve for x
    x = 86,651,141,864.36/309,982.26
  6. Step 6: Final answer
    x = 279,535.81

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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.