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Finding the Fourth Proportional to 375,485.78, 563,228.66 and 91,174.41

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Solution

The fourth proportional to 375,485.78, 563,228.66 and 91,174.41 is: 136,761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,485.78 : 563,228.66 = 91,174.41 : x
  2. Step 2: Convert to fraction form
    375,485.78/563,228.66 = 91,174.41/x
  3. Step 3: Cross multiply
    375,485.78x = 563,228.66 × 91,174.41
  4. Step 4: Simplify right side
    375,485.78x = 51,352,040,770.59
  5. Step 5: Solve for x
    x = 51,352,040,770.59/375,485.78
  6. Step 6: Final answer
    x = 136,761.61

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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.