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Finding the Fourth Proportional to 275,353.11, 412,857.54 and 115,385.81

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Solution

The fourth proportional to 275,353.11, 412,857.54 and 115,385.81 is: 173,006.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,353.11 : 412,857.54 = 115,385.81 : x
  2. Step 2: Convert to fraction form
    275,353.11/412,857.54 = 115,385.81/x
  3. Step 3: Cross multiply
    275,353.11x = 412,857.54 × 115,385.81
  4. Step 4: Simplify right side
    275,353.11x = 47,637,899,603.22
  5. Step 5: Solve for x
    x = 47,637,899,603.22/275,353.11
  6. Step 6: Final answer
    x = 173,006.58

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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.