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Finding the Fourth Proportional to 403,988.44, 557,478.98 and 222,691

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Solution

The fourth proportional to 403,988.44, 557,478.98 and 222,691 is: 307,299.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,988.44 : 557,478.98 = 222,691 : x
  2. Step 2: Convert to fraction form
    403,988.44/557,478.98 = 222,691/x
  3. Step 3: Cross multiply
    403,988.44x = 557,478.98 × 222,691
  4. Step 4: Simplify right side
    403,988.44x = 124,145,551,535.18
  5. Step 5: Solve for x
    x = 124,145,551,535.18/403,988.44
  6. Step 6: Final answer
    x = 307,299.76

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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.