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Finding the Fourth Proportional to 262,481.70, 393,722.55 and 209,993.70

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Solution

The fourth proportional to 262,481.70, 393,722.55 and 209,993.70 is: 314,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,481.70 : 393,722.55 = 209,993.70 : x
  2. Step 2: Convert to fraction form
    262,481.70/393,722.55 = 209,993.70/x
  3. Step 3: Cross multiply
    262,481.70x = 393,722.55 × 209,993.70
  4. Step 4: Simplify right side
    262,481.70x = 82,679,255,047.94
  5. Step 5: Solve for x
    x = 82,679,255,047.94/262,481.70
  6. Step 6: Final answer
    x = 314,990.55

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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.