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Finding the Fourth Proportional to 443,401.48, 611,699.66 and 271,327.71

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Solution

The fourth proportional to 443,401.48, 611,699.66 and 271,327.71 is: 374,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,401.48 : 611,699.66 = 271,327.71 : x
  2. Step 2: Convert to fraction form
    443,401.48/611,699.66 = 271,327.71/x
  3. Step 3: Cross multiply
    443,401.48x = 611,699.66 × 271,327.71
  4. Step 4: Simplify right side
    443,401.48x = 165,971,067,995.70
  5. Step 5: Solve for x
    x = 165,971,067,995.70/443,401.48
  6. Step 6: Final answer
    x = 374,313.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.