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Finding the Fourth Proportional to 344,674.20, 517,400.10 and 266,136.60

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Solution

The fourth proportional to 344,674.20, 517,400.10 and 266,136.60 is: 399,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,674.20 : 517,400.10 = 266,136.60 : x
  2. Step 2: Convert to fraction form
    344,674.20/517,400.10 = 266,136.60/x
  3. Step 3: Cross multiply
    344,674.20x = 517,400.10 × 266,136.60
  4. Step 4: Simplify right side
    344,674.20x = 137,699,103,453.66
  5. Step 5: Solve for x
    x = 137,699,103,453.66/344,674.20
  6. Step 6: Final answer
    x = 399,505.11

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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.