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Finding the Fourth Proportional to 266,661.88, 400,104 and 117,009.76

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Solution

The fourth proportional to 266,661.88, 400,104 and 117,009.76 is: 175,563.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,661.88 : 400,104 = 117,009.76 : x
  2. Step 2: Convert to fraction form
    266,661.88/400,104 = 117,009.76/x
  3. Step 3: Cross multiply
    266,661.88x = 400,104 × 117,009.76
  4. Step 4: Simplify right side
    266,661.88x = 46,816,073,015.04
  5. Step 5: Solve for x
    x = 46,816,073,015.04/266,661.88
  6. Step 6: Final answer
    x = 175,563.43

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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.