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Finding the Fourth Proportional to 266,698.72, 399,812.64 and 100,603.36

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Solution

The fourth proportional to 266,698.72, 399,812.64 and 100,603.36 is: 150,816.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,698.72 : 399,812.64 = 100,603.36 : x
  2. Step 2: Convert to fraction form
    266,698.72/399,812.64 = 100,603.36/x
  3. Step 3: Cross multiply
    266,698.72x = 399,812.64 × 100,603.36
  4. Step 4: Simplify right side
    266,698.72x = 40,222,494,954.47
  5. Step 5: Solve for x
    x = 40,222,494,954.47/266,698.72
  6. Step 6: Final answer
    x = 150,816.23

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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.