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Finding the Fourth Proportional to 401,489.16, 554,054.98 and 222,641.16

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Solution

The fourth proportional to 401,489.16, 554,054.98 and 222,641.16 is: 307,244.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,489.16 : 554,054.98 = 222,641.16 : x
  2. Step 2: Convert to fraction form
    401,489.16/554,054.98 = 222,641.16/x
  3. Step 3: Cross multiply
    401,489.16x = 554,054.98 × 222,641.16
  4. Step 4: Simplify right side
    401,489.16x = 123,355,443,450.98
  5. Step 5: Solve for x
    x = 123,355,443,450.98/401,489.16
  6. Step 6: Final answer
    x = 307,244.77

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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.