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Finding the Fourth Proportional to 664,241.40, 996,119.10 and 215,080.20

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Solution

The fourth proportional to 664,241.40, 996,119.10 and 215,080.20 is: 322,541.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,241.40 : 996,119.10 = 215,080.20 : x
  2. Step 2: Convert to fraction form
    664,241.40/996,119.10 = 215,080.20/x
  3. Step 3: Cross multiply
    664,241.40x = 996,119.10 × 215,080.20
  4. Step 4: Simplify right side
    664,241.40x = 214,245,495,251.82
  5. Step 5: Solve for x
    x = 214,245,495,251.82/664,241.40
  6. Step 6: Final answer
    x = 322,541.62

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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.