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Finding the Fourth Proportional to 317,139.36, 437,791.92 and 222,019.44

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Solution

The fourth proportional to 317,139.36, 437,791.92 and 222,019.44 is: 306,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,139.36 : 437,791.92 = 222,019.44 : x
  2. Step 2: Convert to fraction form
    317,139.36/437,791.92 = 222,019.44/x
  3. Step 3: Cross multiply
    317,139.36x = 437,791.92 × 222,019.44
  4. Step 4: Simplify right side
    317,139.36x = 97,198,316,914.92
  5. Step 5: Solve for x
    x = 97,198,316,914.92/317,139.36
  6. Step 6: Final answer
    x = 306,484.56

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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.