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Finding the Fourth Proportional to 401,343.61, 553,879.07 and 222,495.61

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Solution

The fourth proportional to 401,343.61, 553,879.07 and 222,495.61 is: 307,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,343.61 : 553,879.07 = 222,495.61 : x
  2. Step 2: Convert to fraction form
    401,343.61/553,879.07 = 222,495.61/x
  3. Step 3: Cross multiply
    401,343.61x = 553,879.07 × 222,495.61
  4. Step 4: Simplify right side
    401,343.61x = 123,235,661,545.88
  5. Step 5: Solve for x
    x = 123,235,661,545.88/401,343.61
  6. Step 6: Final answer
    x = 307,057.74

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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.