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Finding the Fourth Proportional to 401,772, 554,445.36 and 222,924

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Solution

The fourth proportional to 401,772, 554,445.36 and 222,924 is: 307,635.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,772 : 554,445.36 = 222,924 : x
  2. Step 2: Convert to fraction form
    401,772/554,445.36 = 222,924/x
  3. Step 3: Cross multiply
    401,772x = 554,445.36 × 222,924
  4. Step 4: Simplify right side
    401,772x = 123,599,177,432.64
  5. Step 5: Solve for x
    x = 123,599,177,432.64/401,772
  6. Step 6: Final answer
    x = 307,635.12

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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.