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Finding the Fourth Proportional to 375,845.88, 563,891.70 and 139,205.88

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Solution

The fourth proportional to 375,845.88, 563,891.70 and 139,205.88 is: 208,854.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,845.88 : 563,891.70 = 139,205.88 : x
  2. Step 2: Convert to fraction form
    375,845.88/563,891.70 = 139,205.88/x
  3. Step 3: Cross multiply
    375,845.88x = 563,891.70 × 139,205.88
  4. Step 4: Simplify right side
    375,845.88x = 78,497,040,323.20
  5. Step 5: Solve for x
    x = 78,497,040,323.20/375,845.88
  6. Step 6: Final answer
    x = 208,854.33

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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.