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Finding the Fourth Proportional to 352,043.20, 528,064.80 and 331,307.20

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Solution

The fourth proportional to 352,043.20, 528,064.80 and 331,307.20 is: 496,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,043.20 : 528,064.80 = 331,307.20 : x
  2. Step 2: Convert to fraction form
    352,043.20/528,064.80 = 331,307.20/x
  3. Step 3: Cross multiply
    352,043.20x = 528,064.80 × 331,307.20
  4. Step 4: Simplify right side
    352,043.20x = 174,951,670,306.56
  5. Step 5: Solve for x
    x = 174,951,670,306.56/352,043.20
  6. Step 6: Final answer
    x = 496,960.80

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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.