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Finding the Fourth Proportional to 218,817.35, 328,281.37 and 61,045.68

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Solution

The fourth proportional to 218,817.35, 328,281.37 and 61,045.68 is: 91,583.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,817.35 : 328,281.37 = 61,045.68 : x
  2. Step 2: Convert to fraction form
    218,817.35/328,281.37 = 61,045.68/x
  3. Step 3: Cross multiply
    218,817.35x = 328,281.37 × 61,045.68
  4. Step 4: Simplify right side
    218,817.35x = 20,040,160,884.80
  5. Step 5: Solve for x
    x = 20,040,160,884.80/218,817.35
  6. Step 6: Final answer
    x = 91,583.97

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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.