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Finding the Fourth Proportional to 228,615.88, 342,921.26 and 80,837.32

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Solution

The fourth proportional to 228,615.88, 342,921.26 and 80,837.32 is: 121,255.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,615.88 : 342,921.26 = 80,837.32 : x
  2. Step 2: Convert to fraction form
    228,615.88/342,921.26 = 80,837.32/x
  3. Step 3: Cross multiply
    228,615.88x = 342,921.26 × 80,837.32
  4. Step 4: Simplify right side
    228,615.88x = 27,720,835,629.42
  5. Step 5: Solve for x
    x = 27,720,835,629.42/228,615.88
  6. Step 6: Final answer
    x = 121,255.07

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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.