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Finding the Fourth Proportional to 219,510.71, 329,266.11 and 61,739.18

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Solution

The fourth proportional to 219,510.71, 329,266.11 and 61,739.18 is: 92,608.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,510.71 : 329,266.11 = 61,739.18 : x
  2. Step 2: Convert to fraction form
    219,510.71/329,266.11 = 61,739.18/x
  3. Step 3: Cross multiply
    219,510.71x = 329,266.11 × 61,739.18
  4. Step 4: Simplify right side
    219,510.71x = 20,328,619,453.13
  5. Step 5: Solve for x
    x = 20,328,619,453.13/219,510.71
  6. Step 6: Final answer
    x = 92,608.78

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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.