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Finding the Fourth Proportional to 231,839.70, 347,798.70 and 71,878.92

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Solution

The fourth proportional to 231,839.70, 347,798.70 and 71,878.92 is: 107,830.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,839.70 : 347,798.70 = 71,878.92 : x
  2. Step 2: Convert to fraction form
    231,839.70/347,798.70 = 71,878.92/x
  3. Step 3: Cross multiply
    231,839.70x = 347,798.70 × 71,878.92
  4. Step 4: Simplify right side
    231,839.70x = 24,999,394,933.40
  5. Step 5: Solve for x
    x = 24,999,394,933.40/231,839.70
  6. Step 6: Final answer
    x = 107,830.52

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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.