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Finding the Fourth Proportional to 403,897.87, 557,356.28 and 222,609.24

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Solution

The fourth proportional to 403,897.87, 557,356.28 and 222,609.24 is: 307,188.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,897.87 : 557,356.28 = 222,609.24 : x
  2. Step 2: Convert to fraction form
    403,897.87/557,356.28 = 222,609.24/x
  3. Step 3: Cross multiply
    403,897.87x = 557,356.28 × 222,609.24
  4. Step 4: Simplify right side
    403,897.87x = 124,072,656,786.98
  5. Step 5: Solve for x
    x = 124,072,656,786.98/403,897.87
  6. Step 6: Final answer
    x = 307,188.19

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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.