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Finding the Fourth Proportional to 331,571.70, 496,774.35 and 272,085.30

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Solution

The fourth proportional to 331,571.70, 496,774.35 and 272,085.30 is: 407,649.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,571.70 : 496,774.35 = 272,085.30 : x
  2. Step 2: Convert to fraction form
    331,571.70/496,774.35 = 272,085.30/x
  3. Step 3: Cross multiply
    331,571.70x = 496,774.35 × 272,085.30
  4. Step 4: Simplify right side
    331,571.70x = 135,164,998,052.06
  5. Step 5: Solve for x
    x = 135,164,998,052.06/331,571.70
  6. Step 6: Final answer
    x = 407,649.38

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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.