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Finding the Fourth Proportional to 218,733.20, 328,099.80 and 218,733.20

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Solution

The fourth proportional to 218,733.20, 328,099.80 and 218,733.20 is: 328,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,733.20 : 328,099.80 = 218,733.20 : x
  2. Step 2: Convert to fraction form
    218,733.20/328,099.80 = 218,733.20/x
  3. Step 3: Cross multiply
    218,733.20x = 328,099.80 × 218,733.20
  4. Step 4: Simplify right side
    218,733.20x = 71,766,319,173.36
  5. Step 5: Solve for x
    x = 71,766,319,173.36/218,733.20
  6. Step 6: Final answer
    x = 328,099.80

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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.