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Finding the Fourth Proportional to 318,404.80, 439,402.28 and 182,436

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Solution

The fourth proportional to 318,404.80, 439,402.28 and 182,436 is: 251,763.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,404.80 : 439,402.28 = 182,436 : x
  2. Step 2: Convert to fraction form
    318,404.80/439,402.28 = 182,436/x
  3. Step 3: Cross multiply
    318,404.80x = 439,402.28 × 182,436
  4. Step 4: Simplify right side
    318,404.80x = 80,162,794,354.08
  5. Step 5: Solve for x
    x = 80,162,794,354.08/318,404.80
  6. Step 6: Final answer
    x = 251,763.77

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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.