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Finding the Fourth Proportional to 218,977.60, 328,077.60 and 204,980.80

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Solution

The fourth proportional to 218,977.60, 328,077.60 and 204,980.80 is: 307,107.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,977.60 : 328,077.60 = 204,980.80 : x
  2. Step 2: Convert to fraction form
    218,977.60/328,077.60 = 204,980.80/x
  3. Step 3: Cross multiply
    218,977.60x = 328,077.60 × 204,980.80
  4. Step 4: Simplify right side
    218,977.60x = 67,249,608,910.08
  5. Step 5: Solve for x
    x = 67,249,608,910.08/218,977.60
  6. Step 6: Final answer
    x = 307,107.25

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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.