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Finding the Fourth Proportional to 213,173.28, 294,179.70 and 117,679.98

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Solution

The fourth proportional to 213,173.28, 294,179.70 and 117,679.98 is: 162,398.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,173.28 : 294,179.70 = 117,679.98 : x
  2. Step 2: Convert to fraction form
    213,173.28/294,179.70 = 117,679.98/x
  3. Step 3: Cross multiply
    213,173.28x = 294,179.70 × 117,679.98
  4. Step 4: Simplify right side
    213,173.28x = 34,619,061,212.41
  5. Step 5: Solve for x
    x = 34,619,061,212.41/213,173.28
  6. Step 6: Final answer
    x = 162,398.69

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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.