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Finding the Fourth Proportional to 218,826.40, 328,239.60 and 204,829.60

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Solution

The fourth proportional to 218,826.40, 328,239.60 and 204,829.60 is: 307,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,826.40 : 328,239.60 = 204,829.60 : x
  2. Step 2: Convert to fraction form
    218,826.40/328,239.60 = 204,829.60/x
  3. Step 3: Cross multiply
    218,826.40x = 328,239.60 × 204,829.60
  4. Step 4: Simplify right side
    218,826.40x = 67,233,185,972.16
  5. Step 5: Solve for x
    x = 67,233,185,972.16/218,826.40
  6. Step 6: Final answer
    x = 307,244.40

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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.