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Finding the Fourth Proportional to 401,478.28, 554,039.97 and 222,630.28

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Solution

The fourth proportional to 401,478.28, 554,039.97 and 222,630.28 is: 307,229.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,478.28 : 554,039.97 = 222,630.28 : x
  2. Step 2: Convert to fraction form
    401,478.28/554,039.97 = 222,630.28/x
  3. Step 3: Cross multiply
    401,478.28x = 554,039.97 × 222,630.28
  4. Step 4: Simplify right side
    401,478.28x = 123,346,073,652.29
  5. Step 5: Solve for x
    x = 123,346,073,652.29/401,478.28
  6. Step 6: Final answer
    x = 307,229.76

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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.