Home / 206,399.07-284,911.83-138,391.28

Finding the Fourth Proportional to 206,399.07, 284,911.83 and 138,391.28

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Solution

The fourth proportional to 206,399.07, 284,911.83 and 138,391.28 is: 191,034.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,399.07 : 284,911.83 = 138,391.28 : x
  2. Step 2: Convert to fraction form
    206,399.07/284,911.83 = 138,391.28/x
  3. Step 3: Cross multiply
    206,399.07x = 284,911.83 × 138,391.28
  4. Step 4: Simplify right side
    206,399.07x = 39,429,311,416.28
  5. Step 5: Solve for x
    x = 39,429,311,416.28/206,399.07
  6. Step 6: Final answer
    x = 191,034.35

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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.