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Finding the Fourth Proportional to 318,057.44, 439,021.55 and 203,644.26

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Solution

The fourth proportional to 318,057.44, 439,021.55 and 203,644.26 is: 281,094.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,057.44 : 439,021.55 = 203,644.26 : x
  2. Step 2: Convert to fraction form
    318,057.44/439,021.55 = 203,644.26/x
  3. Step 3: Cross multiply
    318,057.44x = 439,021.55 × 203,644.26
  4. Step 4: Simplify right side
    318,057.44x = 89,404,219,182.91
  5. Step 5: Solve for x
    x = 89,404,219,182.91/318,057.44
  6. Step 6: Final answer
    x = 281,094.57

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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.