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Finding the Fourth Proportional to 647,996.20, 971,994.30 and 227,314.60

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Solution

The fourth proportional to 647,996.20, 971,994.30 and 227,314.60 is: 340,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,996.20 : 971,994.30 = 227,314.60 : x
  2. Step 2: Convert to fraction form
    647,996.20/971,994.30 = 227,314.60/x
  3. Step 3: Cross multiply
    647,996.20x = 971,994.30 × 227,314.60
  4. Step 4: Simplify right side
    647,996.20x = 220,948,495,506.78
  5. Step 5: Solve for x
    x = 220,948,495,506.78/647,996.20
  6. Step 6: Final answer
    x = 340,971.90

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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.