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Finding the Fourth Proportional to 456,054.60, 684,081.90 and 140,608.20

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Solution

The fourth proportional to 456,054.60, 684,081.90 and 140,608.20 is: 210,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,054.60 : 684,081.90 = 140,608.20 : x
  2. Step 2: Convert to fraction form
    456,054.60/684,081.90 = 140,608.20/x
  3. Step 3: Cross multiply
    456,054.60x = 684,081.90 × 140,608.20
  4. Step 4: Simplify right side
    456,054.60x = 96,187,524,611.58
  5. Step 5: Solve for x
    x = 96,187,524,611.58/456,054.60
  6. Step 6: Final answer
    x = 210,912.30

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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.