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Finding the Fourth Proportional to 251,891.37, 347,603.81 and 143,016.03

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Solution

The fourth proportional to 251,891.37, 347,603.81 and 143,016.03 is: 197,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,891.37 : 347,603.81 = 143,016.03 : x
  2. Step 2: Convert to fraction form
    251,891.37/347,603.81 = 143,016.03/x
  3. Step 3: Cross multiply
    251,891.37x = 347,603.81 × 143,016.03
  4. Step 4: Simplify right side
    251,891.37x = 49,712,916,203.99
  5. Step 5: Solve for x
    x = 49,712,916,203.99/251,891.37
  6. Step 6: Final answer
    x = 197,358.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.