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Finding the Fourth Proportional to 401,475.78, 554,036.52 and 222,627.78

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Solution

The fourth proportional to 401,475.78, 554,036.52 and 222,627.78 is: 307,226.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,475.78 : 554,036.52 = 222,627.78 : x
  2. Step 2: Convert to fraction form
    401,475.78/554,036.52 = 222,627.78/x
  3. Step 3: Cross multiply
    401,475.78x = 554,036.52 × 222,627.78
  4. Step 4: Simplify right side
    401,475.78x = 123,343,920,486.53
  5. Step 5: Solve for x
    x = 123,343,920,486.53/401,475.78
  6. Step 6: Final answer
    x = 307,226.31

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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.