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Finding the Fourth Proportional to 219,881.82, 329,846.61 and 70,086.90

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Solution

The fourth proportional to 219,881.82, 329,846.61 and 70,086.90 is: 105,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,881.82 : 329,846.61 = 70,086.90 : x
  2. Step 2: Convert to fraction form
    219,881.82/329,846.61 = 70,086.90/x
  3. Step 3: Cross multiply
    219,881.82x = 329,846.61 × 70,086.90
  4. Step 4: Simplify right side
    219,881.82x = 23,117,926,370.41
  5. Step 5: Solve for x
    x = 23,117,926,370.41/219,881.82
  6. Step 6: Final answer
    x = 105,137.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.