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Finding the Fourth Proportional to 220,674.60, 331,011.90 and 72,930.60

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Solution

The fourth proportional to 220,674.60, 331,011.90 and 72,930.60 is: 109,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,674.60 : 331,011.90 = 72,930.60 : x
  2. Step 2: Convert to fraction form
    220,674.60/331,011.90 = 72,930.60/x
  3. Step 3: Cross multiply
    220,674.60x = 331,011.90 × 72,930.60
  4. Step 4: Simplify right side
    220,674.60x = 24,140,896,474.14
  5. Step 5: Solve for x
    x = 24,140,896,474.14/220,674.60
  6. Step 6: Final answer
    x = 109,395.90

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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.