Home / 521,738.80-782,608.20-166,764.40

Finding the Fourth Proportional to 521,738.80, 782,608.20 and 166,764.40

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Solution

The fourth proportional to 521,738.80, 782,608.20 and 166,764.40 is: 250,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,738.80 : 782,608.20 = 166,764.40 : x
  2. Step 2: Convert to fraction form
    521,738.80/782,608.20 = 166,764.40/x
  3. Step 3: Cross multiply
    521,738.80x = 782,608.20 × 166,764.40
  4. Step 4: Simplify right side
    521,738.80x = 130,511,186,908.08
  5. Step 5: Solve for x
    x = 130,511,186,908.08/521,738.80
  6. Step 6: Final answer
    x = 250,146.60

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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.