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Finding the Fourth Proportional to 408,787.02, 564,138.27 and 247,671.54

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Solution

The fourth proportional to 408,787.02, 564,138.27 and 247,671.54 is: 341,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,787.02 : 564,138.27 = 247,671.54 : x
  2. Step 2: Convert to fraction form
    408,787.02/564,138.27 = 247,671.54/x
  3. Step 3: Cross multiply
    408,787.02x = 564,138.27 × 247,671.54
  4. Step 4: Simplify right side
    408,787.02x = 139,720,994,103.84
  5. Step 5: Solve for x
    x = 139,720,994,103.84/408,787.02
  6. Step 6: Final answer
    x = 341,794.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.