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Finding the Fourth Proportional to 231,731.80, 347,079.30 and 190,259.80

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Solution

The fourth proportional to 231,731.80, 347,079.30 and 190,259.80 is: 284,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,731.80 : 347,079.30 = 190,259.80 : x
  2. Step 2: Convert to fraction form
    231,731.80/347,079.30 = 190,259.80/x
  3. Step 3: Cross multiply
    231,731.80x = 347,079.30 × 190,259.80
  4. Step 4: Simplify right side
    231,731.80x = 66,035,238,202.14
  5. Step 5: Solve for x
    x = 66,035,238,202.14/231,731.80
  6. Step 6: Final answer
    x = 284,964.08

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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.