Home / 378,400.23-522,196.38-206,316.81

Finding the Fourth Proportional to 378,400.23, 522,196.38 and 206,316.81

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Solution

The fourth proportional to 378,400.23, 522,196.38 and 206,316.81 is: 284,719.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,400.23 : 522,196.38 = 206,316.81 : x
  2. Step 2: Convert to fraction form
    378,400.23/522,196.38 = 206,316.81/x
  3. Step 3: Cross multiply
    378,400.23x = 522,196.38 × 206,316.81
  4. Step 4: Simplify right side
    378,400.23x = 107,737,891,315.15
  5. Step 5: Solve for x
    x = 107,737,891,315.15/378,400.23
  6. Step 6: Final answer
    x = 284,719.41

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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.