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Finding the Fourth Proportional to 230,408.55, 345,649.28 and 80,645.22

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Solution

The fourth proportional to 230,408.55, 345,649.28 and 80,645.22 is: 120,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,408.55 : 345,649.28 = 80,645.22 : x
  2. Step 2: Convert to fraction form
    230,408.55/345,649.28 = 80,645.22/x
  3. Step 3: Cross multiply
    230,408.55x = 345,649.28 × 80,645.22
  4. Step 4: Simplify right side
    230,408.55x = 27,874,961,825.22
  5. Step 5: Solve for x
    x = 27,874,961,825.22/230,408.55
  6. Step 6: Final answer
    x = 120,980.59

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1.5x scale

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.