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Finding the Fourth Proportional to 266,940.12, 400,131.20 and 89,301

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Solution

The fourth proportional to 266,940.12, 400,131.20 and 89,301 is: 133,858.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,940.12 : 400,131.20 = 89,301 : x
  2. Step 2: Convert to fraction form
    266,940.12/400,131.20 = 89,301/x
  3. Step 3: Cross multiply
    266,940.12x = 400,131.20 × 89,301
  4. Step 4: Simplify right side
    266,940.12x = 35,732,116,291.20
  5. Step 5: Solve for x
    x = 35,732,116,291.20/266,940.12
  6. Step 6: Final answer
    x = 133,858.17

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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.