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Finding the Fourth Proportional to 318,460.62, 439,293.12 and 199,021.26

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Solution

The fourth proportional to 318,460.62, 439,293.12 and 199,021.26 is: 274,535.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,460.62 : 439,293.12 = 199,021.26 : x
  2. Step 2: Convert to fraction form
    318,460.62/439,293.12 = 199,021.26/x
  3. Step 3: Cross multiply
    318,460.62x = 439,293.12 × 199,021.26
  4. Step 4: Simplify right side
    318,460.62x = 87,428,670,251.73
  5. Step 5: Solve for x
    x = 87,428,670,251.73/318,460.62
  6. Step 6: Final answer
    x = 274,535.26

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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.