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Finding the Fourth Proportional to 398,894.40, 550,486.56 and 229,162.56

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Solution

The fourth proportional to 398,894.40, 550,486.56 and 229,162.56 is: 316,251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,894.40 : 550,486.56 = 229,162.56 : x
  2. Step 2: Convert to fraction form
    398,894.40/550,486.56 = 229,162.56/x
  3. Step 3: Cross multiply
    398,894.40x = 550,486.56 × 229,162.56
  4. Step 4: Simplify right side
    398,894.40x = 126,150,909,335.19
  5. Step 5: Solve for x
    x = 126,150,909,335.19/398,894.40
  6. Step 6: Final answer
    x = 316,251.39

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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.