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Finding the Fourth Proportional to 246,651, 369,976.50 and 80,439

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Solution

The fourth proportional to 246,651, 369,976.50 and 80,439 is: 120,658.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,651 : 369,976.50 = 80,439 : x
  2. Step 2: Convert to fraction form
    246,651/369,976.50 = 80,439/x
  3. Step 3: Cross multiply
    246,651x = 369,976.50 × 80,439
  4. Step 4: Simplify right side
    246,651x = 29,760,539,683.50
  5. Step 5: Solve for x
    x = 29,760,539,683.50/246,651
  6. Step 6: Final answer
    x = 120,658.50

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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.