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Finding the Fourth Proportional to 275,134.52, 379,524.77 and 172,998.28

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Solution

The fourth proportional to 275,134.52, 379,524.77 and 172,998.28 is: 238,636.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,134.52 : 379,524.77 = 172,998.28 : x
  2. Step 2: Convert to fraction form
    275,134.52/379,524.77 = 172,998.28/x
  3. Step 3: Cross multiply
    275,134.52x = 379,524.77 × 172,998.28
  4. Step 4: Simplify right side
    275,134.52x = 65,657,130,529.77
  5. Step 5: Solve for x
    x = 65,657,130,529.77/275,134.52
  6. Step 6: Final answer
    x = 238,636.47

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1.5x scale

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.