Home / 331,520.64-497,116.80-268,183.68

Finding the Fourth Proportional to 331,520.64, 497,116.80 and 268,183.68

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Solution

The fourth proportional to 331,520.64, 497,116.80 and 268,183.68 is: 402,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,520.64 : 497,116.80 = 268,183.68 : x
  2. Step 2: Convert to fraction form
    331,520.64/497,116.80 = 268,183.68/x
  3. Step 3: Cross multiply
    331,520.64x = 497,116.80 × 268,183.68
  4. Step 4: Simplify right side
    331,520.64x = 133,318,612,813.82
  5. Step 5: Solve for x
    x = 133,318,612,813.82/331,520.64
  6. Step 6: Final answer
    x = 402,142.72

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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.