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Finding the Fourth Proportional to 315,076.52, 434,800.90 and 171,836.26

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Solution

The fourth proportional to 315,076.52, 434,800.90 and 171,836.26 is: 237,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,076.52 : 434,800.90 = 171,836.26 : x
  2. Step 2: Convert to fraction form
    315,076.52/434,800.90 = 171,836.26/x
  3. Step 3: Cross multiply
    315,076.52x = 434,800.90 × 171,836.26
  4. Step 4: Simplify right side
    315,076.52x = 74,714,560,500.63
  5. Step 5: Solve for x
    x = 74,714,560,500.63/315,076.52
  6. Step 6: Final answer
    x = 237,131.48

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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.