Home / 545,126.20-818,175.30-320,205.40

Finding the Fourth Proportional to 545,126.20, 818,175.30 and 320,205.40

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Solution

The fourth proportional to 545,126.20, 818,175.30 and 320,205.40 is: 480,593.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,126.20 : 818,175.30 = 320,205.40 : x
  2. Step 2: Convert to fraction form
    545,126.20/818,175.30 = 320,205.40/x
  3. Step 3: Cross multiply
    545,126.20x = 818,175.30 × 320,205.40
  4. Step 4: Simplify right side
    545,126.20x = 261,984,149,206.62
  5. Step 5: Solve for x
    x = 261,984,149,206.62/545,126.20
  6. Step 6: Final answer
    x = 480,593.57

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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.