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Finding the Fourth Proportional to 191,517.72, 287,296.28 and 73,288.48

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Solution

The fourth proportional to 191,517.72, 287,296.28 and 73,288.48 is: 109,940.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,517.72 : 287,296.28 = 73,288.48 : x
  2. Step 2: Convert to fraction form
    191,517.72/287,296.28 = 73,288.48/x
  3. Step 3: Cross multiply
    191,517.72x = 287,296.28 × 73,288.48
  4. Step 4: Simplify right side
    191,517.72x = 21,055,507,670.85
  5. Step 5: Solve for x
    x = 21,055,507,670.85/191,517.72
  6. Step 6: Final answer
    x = 109,940.26

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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.