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Finding the Fourth Proportional to 247,408.20, 370,674.90 and 219,414.60

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Solution

The fourth proportional to 247,408.20, 370,674.90 and 219,414.60 is: 328,733.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,408.20 : 370,674.90 = 219,414.60 : x
  2. Step 2: Convert to fraction form
    247,408.20/370,674.90 = 219,414.60/x
  3. Step 3: Cross multiply
    247,408.20x = 370,674.90 × 219,414.60
  4. Step 4: Simplify right side
    247,408.20x = 81,331,484,913.54
  5. Step 5: Solve for x
    x = 81,331,484,913.54/247,408.20
  6. Step 6: Final answer
    x = 328,733.99

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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.