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Finding the Fourth Proportional to 262,481.70, 393,722.55 and 72,941.70

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Solution

The fourth proportional to 262,481.70, 393,722.55 and 72,941.70 is: 109,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,481.70 : 393,722.55 = 72,941.70 : x
  2. Step 2: Convert to fraction form
    262,481.70/393,722.55 = 72,941.70/x
  3. Step 3: Cross multiply
    262,481.70x = 393,722.55 × 72,941.70
  4. Step 4: Simplify right side
    262,481.70x = 28,718,792,125.34
  5. Step 5: Solve for x
    x = 28,718,792,125.34/262,481.70
  6. Step 6: Final answer
    x = 109,412.55

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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.