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Finding the Fourth Proportional to 664,309.64, 996,622.66 and 215,030.60

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Solution

The fourth proportional to 664,309.64, 996,622.66 and 215,030.60 is: 322,597.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,309.64 : 996,622.66 = 215,030.60 : x
  2. Step 2: Convert to fraction form
    664,309.64/996,622.66 = 215,030.60/x
  3. Step 3: Cross multiply
    664,309.64x = 996,622.66 × 215,030.60
  4. Step 4: Simplify right side
    664,309.64x = 214,304,368,553.40
  5. Step 5: Solve for x
    x = 214,304,368,553.40/664,309.64
  6. Step 6: Final answer
    x = 322,597.11

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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.