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Finding the Fourth Proportional to 633,079.40, 949,619.10 and 212,253.80

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Solution

The fourth proportional to 633,079.40, 949,619.10 and 212,253.80 is: 318,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,079.40 : 949,619.10 = 212,253.80 : x
  2. Step 2: Convert to fraction form
    633,079.40/949,619.10 = 212,253.80/x
  3. Step 3: Cross multiply
    633,079.40x = 949,619.10 × 212,253.80
  4. Step 4: Simplify right side
    633,079.40x = 201,560,262,527.58
  5. Step 5: Solve for x
    x = 201,560,262,527.58/633,079.40
  6. Step 6: Final answer
    x = 318,380.70

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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.