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Finding the Fourth Proportional to 401,455, 554,007.90 and 222,607

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Solution

The fourth proportional to 401,455, 554,007.90 and 222,607 is: 307,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,455 : 554,007.90 = 222,607 : x
  2. Step 2: Convert to fraction form
    401,455/554,007.90 = 222,607/x
  3. Step 3: Cross multiply
    401,455x = 554,007.90 × 222,607
  4. Step 4: Simplify right side
    401,455x = 123,326,036,595.30
  5. Step 5: Solve for x
    x = 123,326,036,595.30/401,455
  6. Step 6: Final answer
    x = 307,197.66

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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.