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Finding the Fourth Proportional to 270,490.80, 405,736.20 and 248,329.20

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Solution

The fourth proportional to 270,490.80, 405,736.20 and 248,329.20 is: 372,493.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,490.80 : 405,736.20 = 248,329.20 : x
  2. Step 2: Convert to fraction form
    270,490.80/405,736.20 = 248,329.20/x
  3. Step 3: Cross multiply
    270,490.80x = 405,736.20 × 248,329.20
  4. Step 4: Simplify right side
    270,490.80x = 100,756,145,957.04
  5. Step 5: Solve for x
    x = 100,756,145,957.04/270,490.80
  6. Step 6: Final answer
    x = 372,493.80

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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.