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Finding the Fourth Proportional to 620,221.46, 930,102.55 and 220,754.97

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Solution

The fourth proportional to 620,221.46, 930,102.55 and 220,754.97 is: 331,050.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,221.46 : 930,102.55 = 220,754.97 : x
  2. Step 2: Convert to fraction form
    620,221.46/930,102.55 = 220,754.97/x
  3. Step 3: Cross multiply
    620,221.46x = 930,102.55 × 220,754.97
  4. Step 4: Simplify right side
    620,221.46x = 205,324,759,970.29
  5. Step 5: Solve for x
    x = 205,324,759,970.29/620,221.46
  6. Step 6: Final answer
    x = 331,050.72

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Double scale
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Similar ratio
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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.