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Finding the Fourth Proportional to 664,920.48, 997,238.16 and 191,517.60

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Solution

The fourth proportional to 664,920.48, 997,238.16 and 191,517.60 is: 287,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,920.48 : 997,238.16 = 191,517.60 : x
  2. Step 2: Convert to fraction form
    664,920.48/997,238.16 = 191,517.60/x
  3. Step 3: Cross multiply
    664,920.48x = 997,238.16 × 191,517.60
  4. Step 4: Simplify right side
    664,920.48x = 190,988,659,031.62
  5. Step 5: Solve for x
    x = 190,988,659,031.62/664,920.48
  6. Step 6: Final answer
    x = 287,235.34

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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.