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Finding the Fourth Proportional to 303,424.40, 455,136.60 and 299,487.80

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Solution

The fourth proportional to 303,424.40, 455,136.60 and 299,487.80 is: 449,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,424.40 : 455,136.60 = 299,487.80 : x
  2. Step 2: Convert to fraction form
    303,424.40/455,136.60 = 299,487.80/x
  3. Step 3: Cross multiply
    303,424.40x = 455,136.60 × 299,487.80
  4. Step 4: Simplify right side
    303,424.40x = 136,307,859,033.48
  5. Step 5: Solve for x
    x = 136,307,859,033.48/303,424.40
  6. Step 6: Final answer
    x = 449,231.70

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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.