Home / 331,243.20-496,864.80-81,925.20

Finding the Fourth Proportional to 331,243.20, 496,864.80 and 81,925.20

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Solution

The fourth proportional to 331,243.20, 496,864.80 and 81,925.20 is: 122,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,243.20 : 496,864.80 = 81,925.20 : x
  2. Step 2: Convert to fraction form
    331,243.20/496,864.80 = 81,925.20/x
  3. Step 3: Cross multiply
    331,243.20x = 496,864.80 × 81,925.20
  4. Step 4: Simplify right side
    331,243.20x = 40,705,748,112.96
  5. Step 5: Solve for x
    x = 40,705,748,112.96/331,243.20
  6. Step 6: Final answer
    x = 122,887.80

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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.