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Finding the Fourth Proportional to 219,395.66, 329,105.70 and 61,611.75

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Solution

The fourth proportional to 219,395.66, 329,105.70 and 61,611.75 is: 92,421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,395.66 : 329,105.70 = 61,611.75 : x
  2. Step 2: Convert to fraction form
    219,395.66/329,105.70 = 61,611.75/x
  3. Step 3: Cross multiply
    219,395.66x = 329,105.70 × 61,611.75
  4. Step 4: Simplify right side
    219,395.66x = 20,276,778,111.98
  5. Step 5: Solve for x
    x = 20,276,778,111.98/219,395.66
  6. Step 6: Final answer
    x = 92,421.06

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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.