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Finding the Fourth Proportional to 664,419.60, 996,499.80 and 215,031.60

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Solution

The fourth proportional to 664,419.60, 996,499.80 and 215,031.60 is: 322,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,419.60 : 996,499.80 = 215,031.60 : x
  2. Step 2: Convert to fraction form
    664,419.60/996,499.80 = 215,031.60/x
  3. Step 3: Cross multiply
    664,419.60x = 996,499.80 × 215,031.60
  4. Step 4: Simplify right side
    664,419.60x = 214,278,946,393.68
  5. Step 5: Solve for x
    x = 214,278,946,393.68/664,419.60
  6. Step 6: Final answer
    x = 322,505.46

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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.