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Finding the Fourth Proportional to 318,919, 440,103.49 and 175,679.14

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Solution

The fourth proportional to 318,919, 440,103.49 and 175,679.14 is: 242,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,919 : 440,103.49 = 175,679.14 : x
  2. Step 2: Convert to fraction form
    318,919/440,103.49 = 175,679.14/x
  3. Step 3: Cross multiply
    318,919x = 440,103.49 × 175,679.14
  4. Step 4: Simplify right side
    318,919x = 77,317,002,634.20
  5. Step 5: Solve for x
    x = 77,317,002,634.20/318,919
  6. Step 6: Final answer
    x = 242,434.61

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1.5x scale

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.