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Finding the Fourth Proportional to 275,187.07, 412,197.40 and 207,885.79

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Solution

The fourth proportional to 275,187.07, 412,197.40 and 207,885.79 is: 311,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,187.07 : 412,197.40 = 207,885.79 : x
  2. Step 2: Convert to fraction form
    275,187.07/412,197.40 = 207,885.79/x
  3. Step 3: Cross multiply
    275,187.07x = 412,197.40 × 207,885.79
  4. Step 4: Simplify right side
    275,187.07x = 85,689,982,134.95
  5. Step 5: Solve for x
    x = 85,689,982,134.95/275,187.07
  6. Step 6: Final answer
    x = 311,388.11

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1.5x scale

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.