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Finding the Fourth Proportional to 663,275.80, 994,913.70 and 220,043.80

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Solution

The fourth proportional to 663,275.80, 994,913.70 and 220,043.80 is: 330,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,275.80 : 994,913.70 = 220,043.80 : x
  2. Step 2: Convert to fraction form
    663,275.80/994,913.70 = 220,043.80/x
  3. Step 3: Cross multiply
    663,275.80x = 994,913.70 × 220,043.80
  4. Step 4: Simplify right side
    663,275.80x = 218,924,591,220.06
  5. Step 5: Solve for x
    x = 218,924,591,220.06/663,275.80
  6. Step 6: Final answer
    x = 330,065.70

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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.