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Finding the Fourth Proportional to 664,712.41, 996,859.48 and 215,329.02

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Solution

The fourth proportional to 664,712.41, 996,859.48 and 215,329.02 is: 322,925.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,712.41 : 996,859.48 = 215,329.02 : x
  2. Step 2: Convert to fraction form
    664,712.41/996,859.48 = 215,329.02/x
  3. Step 3: Cross multiply
    664,712.41x = 996,859.48 × 215,329.02
  4. Step 4: Simplify right side
    664,712.41x = 214,652,774,906.11
  5. Step 5: Solve for x
    x = 214,652,774,906.11/664,712.41
  6. Step 6: Final answer
    x = 322,925.78

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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.