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Finding the Fourth Proportional to 299,424.30, 449,136.45 and 269,899.80

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Solution

The fourth proportional to 299,424.30, 449,136.45 and 269,899.80 is: 404,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,424.30 : 449,136.45 = 269,899.80 : x
  2. Step 2: Convert to fraction form
    299,424.30/449,136.45 = 269,899.80/x
  3. Step 3: Cross multiply
    299,424.30x = 449,136.45 × 269,899.80
  4. Step 4: Simplify right side
    299,424.30x = 121,221,838,027.71
  5. Step 5: Solve for x
    x = 121,221,838,027.71/299,424.30
  6. Step 6: Final answer
    x = 404,849.70

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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.