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Finding the Fourth Proportional to 275,383.85, 380,272.05 and 172,194.89

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Solution

The fourth proportional to 275,383.85, 380,272.05 and 172,194.89 is: 237,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,383.85 : 380,272.05 = 172,194.89 : x
  2. Step 2: Convert to fraction form
    275,383.85/380,272.05 = 172,194.89/x
  3. Step 3: Cross multiply
    275,383.85x = 380,272.05 × 172,194.89
  4. Step 4: Simplify right side
    275,383.85x = 65,480,901,918.46
  5. Step 5: Solve for x
    x = 65,480,901,918.46/275,383.85
  6. Step 6: Final answer
    x = 237,780.48

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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.