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Finding the Fourth Proportional to 664,606.52, 997,066.92 and 215,326.66

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Solution

The fourth proportional to 664,606.52, 997,066.92 and 215,326.66 is: 323,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,606.52 : 997,066.92 = 215,326.66 : x
  2. Step 2: Convert to fraction form
    664,606.52/997,066.92 = 215,326.66/x
  3. Step 3: Cross multiply
    664,606.52x = 997,066.92 × 215,326.66
  4. Step 4: Simplify right side
    664,606.52x = 214,695,089,680.09
  5. Step 5: Solve for x
    x = 214,695,089,680.09/664,606.52
  6. Step 6: Final answer
    x = 323,040.90

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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.