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Finding the Fourth Proportional to 664,328.20, 996,200.70 and 264,836.20

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Solution

The fourth proportional to 664,328.20, 996,200.70 and 264,836.20 is: 397,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,328.20 : 996,200.70 = 264,836.20 : x
  2. Step 2: Convert to fraction form
    664,328.20/996,200.70 = 264,836.20/x
  3. Step 3: Cross multiply
    664,328.20x = 996,200.70 × 264,836.20
  4. Step 4: Simplify right side
    664,328.20x = 263,830,007,825.34
  5. Step 5: Solve for x
    x = 263,830,007,825.34/664,328.20
  6. Step 6: Final answer
    x = 397,138.05

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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.