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Finding the Fourth Proportional to 274,929.33, 412,458.39 and 85,380.02

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Solution

The fourth proportional to 274,929.33, 412,458.39 and 85,380.02 is: 128,090.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,929.33 : 412,458.39 = 85,380.02 : x
  2. Step 2: Convert to fraction form
    274,929.33/412,458.39 = 85,380.02/x
  3. Step 3: Cross multiply
    274,929.33x = 412,458.39 × 85,380.02
  4. Step 4: Simplify right side
    274,929.33x = 35,215,703,525.08
  5. Step 5: Solve for x
    x = 35,215,703,525.08/274,929.33
  6. Step 6: Final answer
    x = 128,090.02

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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.