Home / 205,787.40-309,337.20-193,977.60

Finding the Fourth Proportional to 205,787.40, 309,337.20 and 193,977.60

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Solution

The fourth proportional to 205,787.40, 309,337.20 and 193,977.60 is: 291,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,787.40 : 309,337.20 = 193,977.60 : x
  2. Step 2: Convert to fraction form
    205,787.40/309,337.20 = 193,977.60/x
  3. Step 3: Cross multiply
    205,787.40x = 309,337.20 × 193,977.60
  4. Step 4: Simplify right side
    205,787.40x = 60,004,487,646.72
  5. Step 5: Solve for x
    x = 60,004,487,646.72/205,787.40
  6. Step 6: Final answer
    x = 291,584.85

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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.