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Finding the Fourth Proportional to 318,355.97, 439,393.61 and 182,480.90

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Solution

The fourth proportional to 318,355.97, 439,393.61 and 182,480.90 is: 251,859.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,355.97 : 439,393.61 = 182,480.90 : x
  2. Step 2: Convert to fraction form
    318,355.97/439,393.61 = 182,480.90/x
  3. Step 3: Cross multiply
    318,355.97x = 439,393.61 × 182,480.90
  4. Step 4: Simplify right side
    318,355.97x = 80,180,942,137.87
  5. Step 5: Solve for x
    x = 80,180,942,137.87/318,355.97
  6. Step 6: Final answer
    x = 251,859.39

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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.