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Finding the Fourth Proportional to 663,106.20, 994,659.30 and 164,470.20

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Solution

The fourth proportional to 663,106.20, 994,659.30 and 164,470.20 is: 246,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,106.20 : 994,659.30 = 164,470.20 : x
  2. Step 2: Convert to fraction form
    663,106.20/994,659.30 = 164,470.20/x
  3. Step 3: Cross multiply
    663,106.20x = 994,659.30 × 164,470.20
  4. Step 4: Simplify right side
    663,106.20x = 163,591,814,002.86
  5. Step 5: Solve for x
    x = 163,591,814,002.86/663,106.20
  6. Step 6: Final answer
    x = 246,705.30

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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.