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Finding the Fourth Proportional to 499,221.72, 749,496.90 and 262,730.48

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Solution

The fourth proportional to 499,221.72, 749,496.90 and 262,730.48 is: 394,445.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,221.72 : 749,496.90 = 262,730.48 : x
  2. Step 2: Convert to fraction form
    499,221.72/749,496.90 = 262,730.48/x
  3. Step 3: Cross multiply
    499,221.72x = 749,496.90 × 262,730.48
  4. Step 4: Simplify right side
    499,221.72x = 196,915,679,744.33
  5. Step 5: Solve for x
    x = 196,915,679,744.33/499,221.72
  6. Step 6: Final answer
    x = 394,445.33

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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.