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Finding the Fourth Proportional to 227,712.80, 341,787.90 and 115,519.70

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Solution

The fourth proportional to 227,712.80, 341,787.90 and 115,519.70 is: 173,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,712.80 : 341,787.90 = 115,519.70 : x
  2. Step 2: Convert to fraction form
    227,712.80/341,787.90 = 115,519.70/x
  3. Step 3: Cross multiply
    227,712.80x = 341,787.90 × 115,519.70
  4. Step 4: Simplify right side
    227,712.80x = 39,483,235,671.63
  5. Step 5: Solve for x
    x = 39,483,235,671.63/227,712.80
  6. Step 6: Final answer
    x = 173,390.50

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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.