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Finding the Fourth Proportional to 403,638.52, 557,064.90 and 222,369.02

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Solution

The fourth proportional to 403,638.52, 557,064.90 and 222,369.02 is: 306,893.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,638.52 : 557,064.90 = 222,369.02 : x
  2. Step 2: Convert to fraction form
    403,638.52/557,064.90 = 222,369.02/x
  3. Step 3: Cross multiply
    403,638.52x = 557,064.90 × 222,369.02
  4. Step 4: Simplify right side
    403,638.52x = 123,873,975,889.40
  5. Step 5: Solve for x
    x = 123,873,975,889.40/403,638.52
  6. Step 6: Final answer
    x = 306,893.35

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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.