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Finding the Fourth Proportional to 398,809.22, 550,334.79 and 226,703.25

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Solution

The fourth proportional to 398,809.22, 550,334.79 and 226,703.25 is: 312,838.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,809.22 : 550,334.79 = 226,703.25 : x
  2. Step 2: Convert to fraction form
    398,809.22/550,334.79 = 226,703.25/x
  3. Step 3: Cross multiply
    398,809.22x = 550,334.79 × 226,703.25
  4. Step 4: Simplify right side
    398,809.22x = 124,762,685,481.07
  5. Step 5: Solve for x
    x = 124,762,685,481.07/398,809.22
  6. Step 6: Final answer
    x = 312,838.02

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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.