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Finding the Fourth Proportional to 284,842.70, 393,067.03 and 155,755.56

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Solution

The fourth proportional to 284,842.70, 393,067.03 and 155,755.56 is: 214,933.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,842.70 : 393,067.03 = 155,755.56 : x
  2. Step 2: Convert to fraction form
    284,842.70/393,067.03 = 155,755.56/x
  3. Step 3: Cross multiply
    284,842.70x = 393,067.03 × 155,755.56
  4. Step 4: Simplify right side
    284,842.70x = 61,222,375,375.19
  5. Step 5: Solve for x
    x = 61,222,375,375.19/284,842.70
  6. Step 6: Final answer
    x = 214,933.98

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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.