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Finding the Fourth Proportional to 331,277.20, 496,915.80 and 308,969.80

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Solution

The fourth proportional to 331,277.20, 496,915.80 and 308,969.80 is: 463,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,277.20 : 496,915.80 = 308,969.80 : x
  2. Step 2: Convert to fraction form
    331,277.20/496,915.80 = 308,969.80/x
  3. Step 3: Cross multiply
    331,277.20x = 496,915.80 × 308,969.80
  4. Step 4: Simplify right side
    331,277.20x = 153,531,975,342.84
  5. Step 5: Solve for x
    x = 153,531,975,342.84/331,277.20
  6. Step 6: Final answer
    x = 463,454.70

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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.