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Finding the Fourth Proportional to 266,136.60, 399,204.90 and 133,037.40

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Solution

The fourth proportional to 266,136.60, 399,204.90 and 133,037.40 is: 199,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,136.60 : 399,204.90 = 133,037.40 : x
  2. Step 2: Convert to fraction form
    266,136.60/399,204.90 = 133,037.40/x
  3. Step 3: Cross multiply
    266,136.60x = 399,204.90 × 133,037.40
  4. Step 4: Simplify right side
    266,136.60x = 53,109,181,963.26
  5. Step 5: Solve for x
    x = 53,109,181,963.26/266,136.60
  6. Step 6: Final answer
    x = 199,556.10

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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.