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Finding the Fourth Proportional to 664,713.38, 996,860.94 and 215,330.00

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Solution

The fourth proportional to 664,713.38, 996,860.94 and 215,330.00 is: 322,927.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,713.38 : 996,860.94 = 215,330.00 : x
  2. Step 2: Convert to fraction form
    664,713.38/996,860.94 = 215,330.00/x
  3. Step 3: Cross multiply
    664,713.38x = 996,860.94 × 215,330.00
  4. Step 4: Simplify right side
    664,713.38x = 214,654,061,225.90
  5. Step 5: Solve for x
    x = 214,654,061,225.90/664,713.38
  6. Step 6: Final answer
    x = 322,927.25

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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.