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Finding the Fourth Proportional to 266,144.04, 399,294 and 99,945

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Solution

The fourth proportional to 266,144.04, 399,294 and 99,945 is: 149,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,144.04 : 399,294 = 99,945 : x
  2. Step 2: Convert to fraction form
    266,144.04/399,294 = 99,945/x
  3. Step 3: Cross multiply
    266,144.04x = 399,294 × 99,945
  4. Step 4: Simplify right side
    266,144.04x = 39,907,438,830
  5. Step 5: Solve for x
    x = 39,907,438,830/266,144.04
  6. Step 6: Final answer
    x = 149,946.77

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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.