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Finding the Fourth Proportional to 394,473.40, 591,710.10 and 252,755.80

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Solution

The fourth proportional to 394,473.40, 591,710.10 and 252,755.80 is: 379,133.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,473.40 : 591,710.10 = 252,755.80 : x
  2. Step 2: Convert to fraction form
    394,473.40/591,710.10 = 252,755.80/x
  3. Step 3: Cross multiply
    394,473.40x = 591,710.10 × 252,755.80
  4. Step 4: Simplify right side
    394,473.40x = 149,558,159,693.58
  5. Step 5: Solve for x
    x = 149,558,159,693.58/394,473.40
  6. Step 6: Final answer
    x = 379,133.70

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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.