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Finding the Fourth Proportional to 664,454.60, 996,552.30 and 215,066.60

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Solution

The fourth proportional to 664,454.60, 996,552.30 and 215,066.60 is: 322,557.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,454.60 : 996,552.30 = 215,066.60 : x
  2. Step 2: Convert to fraction form
    664,454.60/996,552.30 = 215,066.60/x
  3. Step 3: Cross multiply
    664,454.60x = 996,552.30 × 215,066.60
  4. Step 4: Simplify right side
    664,454.60x = 214,325,114,883.18
  5. Step 5: Solve for x
    x = 214,325,114,883.18/664,454.60
  6. Step 6: Final answer
    x = 322,557.95

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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.