Home / 231,531.40-347,297.10-81,940.60

Finding the Fourth Proportional to 231,531.40, 347,297.10 and 81,940.60

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Solution

The fourth proportional to 231,531.40, 347,297.10 and 81,940.60 is: 122,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,531.40 : 347,297.10 = 81,940.60 : x
  2. Step 2: Convert to fraction form
    231,531.40/347,297.10 = 81,940.60/x
  3. Step 3: Cross multiply
    231,531.40x = 347,297.10 × 81,940.60
  4. Step 4: Simplify right side
    231,531.40x = 28,457,732,752.26
  5. Step 5: Solve for x
    x = 28,457,732,752.26/231,531.40
  6. Step 6: Final answer
    x = 122,910.90

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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.