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Finding the Fourth Proportional to 664,493.60, 996,886.20 and 215,235.20

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Solution

The fourth proportional to 664,493.60, 996,886.20 and 215,235.20 is: 322,900.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,493.60 : 996,886.20 = 215,235.20 : x
  2. Step 2: Convert to fraction form
    664,493.60/996,886.20 = 215,235.20/x
  3. Step 3: Cross multiply
    664,493.60x = 996,886.20 × 215,235.20
  4. Step 4: Simplify right side
    664,493.60x = 214,565,000,634.24
  5. Step 5: Solve for x
    x = 214,565,000,634.24/664,493.60
  6. Step 6: Final answer
    x = 322,900.03

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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.