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Finding the Fourth Proportional to 247,645.80, 371,468.70 and 212,216.40

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Solution

The fourth proportional to 247,645.80, 371,468.70 and 212,216.40 is: 318,324.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,645.80 : 371,468.70 = 212,216.40 : x
  2. Step 2: Convert to fraction form
    247,645.80/371,468.70 = 212,216.40/x
  3. Step 3: Cross multiply
    247,645.80x = 371,468.70 × 212,216.40
  4. Step 4: Simplify right side
    247,645.80x = 78,831,750,226.68
  5. Step 5: Solve for x
    x = 78,831,750,226.68/247,645.80
  6. Step 6: Final answer
    x = 318,324.60

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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.