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Finding the Fourth Proportional to 231,728.80, 347,074.80 and 190,256.80

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Solution

The fourth proportional to 231,728.80, 347,074.80 and 190,256.80 is: 284,959.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,728.80 : 347,074.80 = 190,256.80 : x
  2. Step 2: Convert to fraction form
    231,728.80/347,074.80 = 190,256.80/x
  3. Step 3: Cross multiply
    231,728.80x = 347,074.80 × 190,256.80
  4. Step 4: Simplify right side
    231,728.80x = 66,033,340,808.64
  5. Step 5: Solve for x
    x = 66,033,340,808.64/231,728.80
  6. Step 6: Final answer
    x = 284,959.58

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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.