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Finding the Fourth Proportional to 331,012.80, 496,639.44 and 162,515.16

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Solution

The fourth proportional to 331,012.80, 496,639.44 and 162,515.16 is: 243,831.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,012.80 : 496,639.44 = 162,515.16 : x
  2. Step 2: Convert to fraction form
    331,012.80/496,639.44 = 162,515.16/x
  3. Step 3: Cross multiply
    331,012.80x = 496,639.44 × 162,515.16
  4. Step 4: Simplify right side
    331,012.80x = 80,711,438,053.91
  5. Step 5: Solve for x
    x = 80,711,438,053.91/331,012.80
  6. Step 6: Final answer
    x = 243,831.77

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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.