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Finding the Fourth Proportional to 275,883.50, 380,676.87 and 155,001.62

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Solution

The fourth proportional to 275,883.50, 380,676.87 and 155,001.62 is: 213,878.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,883.50 : 380,676.87 = 155,001.62 : x
  2. Step 2: Convert to fraction form
    275,883.50/380,676.87 = 155,001.62/x
  3. Step 3: Cross multiply
    275,883.50x = 380,676.87 × 155,001.62
  4. Step 4: Simplify right side
    275,883.50x = 59,005,532,498.22
  5. Step 5: Solve for x
    x = 59,005,532,498.22/275,883.50
  6. Step 6: Final answer
    x = 213,878.44

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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.