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Finding the Fourth Proportional to 403,800.80, 557,269.90 and 222,512.64

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Solution

The fourth proportional to 403,800.80, 557,269.90 and 222,512.64 is: 307,081.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,800.80 : 557,269.90 = 222,512.64 : x
  2. Step 2: Convert to fraction form
    403,800.80/557,269.90 = 222,512.64/x
  3. Step 3: Cross multiply
    403,800.80x = 557,269.90 × 222,512.64
  4. Step 4: Simplify right side
    403,800.80x = 123,999,596,641.54
  5. Step 5: Solve for x
    x = 123,999,596,641.54/403,800.80
  6. Step 6: Final answer
    x = 307,081.11

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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.