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Finding the Fourth Proportional to 219,187.80, 328,125.60 and 206,211.60

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Solution

The fourth proportional to 219,187.80, 328,125.60 and 206,211.60 is: 308,700.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,187.80 : 328,125.60 = 206,211.60 : x
  2. Step 2: Convert to fraction form
    219,187.80/328,125.60 = 206,211.60/x
  3. Step 3: Cross multiply
    219,187.80x = 328,125.60 × 206,211.60
  4. Step 4: Simplify right side
    219,187.80x = 67,663,304,976.96
  5. Step 5: Solve for x
    x = 67,663,304,976.96/219,187.80
  6. Step 6: Final answer
    x = 308,700.14

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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.