Home / 331,215.20-496,822.80-81,897.20

Finding the Fourth Proportional to 331,215.20, 496,822.80 and 81,897.20

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Solution

The fourth proportional to 331,215.20, 496,822.80 and 81,897.20 is: 122,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,215.20 : 496,822.80 = 81,897.20 : x
  2. Step 2: Convert to fraction form
    331,215.20/496,822.80 = 81,897.20/x
  3. Step 3: Cross multiply
    331,215.20x = 496,822.80 × 81,897.20
  4. Step 4: Simplify right side
    331,215.20x = 40,688,396,216.16
  5. Step 5: Solve for x
    x = 40,688,396,216.16/331,215.20
  6. Step 6: Final answer
    x = 122,845.80

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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.