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Finding the Fourth Proportional to 481,788.70, 722,391.45 and 215,499.58

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Solution

The fourth proportional to 481,788.70, 722,391.45 and 215,499.58 is: 323,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,788.70 : 722,391.45 = 215,499.58 : x
  2. Step 2: Convert to fraction form
    481,788.70/722,391.45 = 215,499.58/x
  3. Step 3: Cross multiply
    481,788.70x = 722,391.45 × 215,499.58
  4. Step 4: Simplify right side
    481,788.70x = 155,675,054,070.59
  5. Step 5: Solve for x
    x = 155,675,054,070.59/481,788.70
  6. Step 6: Final answer
    x = 323,118.94

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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.