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Finding the Fourth Proportional to 246,640.20, 369,960.30 and 128,542.20

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Solution

The fourth proportional to 246,640.20, 369,960.30 and 128,542.20 is: 192,813.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,640.20 : 369,960.30 = 128,542.20 : x
  2. Step 2: Convert to fraction form
    246,640.20/369,960.30 = 128,542.20/x
  3. Step 3: Cross multiply
    246,640.20x = 369,960.30 × 128,542.20
  4. Step 4: Simplify right side
    246,640.20x = 47,555,510,874.66
  5. Step 5: Solve for x
    x = 47,555,510,874.66/246,640.20
  6. Step 6: Final answer
    x = 192,813.30

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1.5x scale

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.