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Finding the Fourth Proportional to 325,787.40, 488,340.09 and 136,356.30

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Solution

The fourth proportional to 325,787.40, 488,340.09 and 136,356.30 is: 204,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,787.40 : 488,340.09 = 136,356.30 : x
  2. Step 2: Convert to fraction form
    325,787.40/488,340.09 = 136,356.30/x
  3. Step 3: Cross multiply
    325,787.40x = 488,340.09 × 136,356.30
  4. Step 4: Simplify right side
    325,787.40x = 66,588,247,814.07
  5. Step 5: Solve for x
    x = 66,588,247,814.07/325,787.40
  6. Step 6: Final answer
    x = 204,391.72

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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.