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Finding the Fourth Proportional to 398,744.55, 550,255.14 and 226,681.29

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Solution

The fourth proportional to 398,744.55, 550,255.14 and 226,681.29 is: 312,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,744.55 : 550,255.14 = 226,681.29 : x
  2. Step 2: Convert to fraction form
    398,744.55/550,255.14 = 226,681.29/x
  3. Step 3: Cross multiply
    398,744.55x = 550,255.14 × 226,681.29
  4. Step 4: Simplify right side
    398,744.55x = 124,732,544,964.33
  5. Step 5: Solve for x
    x = 124,732,544,964.33/398,744.55
  6. Step 6: Final answer
    x = 312,813.17

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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.