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Finding the Fourth Proportional to 443,493.75, 664,274.40 and 291,519.27

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Solution

The fourth proportional to 443,493.75, 664,274.40 and 291,519.27 is: 436,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,493.75 : 664,274.40 = 291,519.27 : x
  2. Step 2: Convert to fraction form
    443,493.75/664,274.40 = 291,519.27/x
  3. Step 3: Cross multiply
    443,493.75x = 664,274.40 × 291,519.27
  4. Step 4: Simplify right side
    443,493.75x = 193,648,788,167.69
  5. Step 5: Solve for x
    x = 193,648,788,167.69/443,493.75
  6. Step 6: Final answer
    x = 436,643.78

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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.