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Finding the Fourth Proportional to 247,216.40, 370,824.60 and 210,474.80

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Solution

The fourth proportional to 247,216.40, 370,824.60 and 210,474.80 is: 315,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,216.40 : 370,824.60 = 210,474.80 : x
  2. Step 2: Convert to fraction form
    247,216.40/370,824.60 = 210,474.80/x
  3. Step 3: Cross multiply
    247,216.40x = 370,824.60 × 210,474.80
  4. Step 4: Simplify right side
    247,216.40x = 78,049,233,520.08
  5. Step 5: Solve for x
    x = 78,049,233,520.08/247,216.40
  6. Step 6: Final answer
    x = 315,712.20

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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.