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Finding the Fourth Proportional to 275,985.70, 380,855.73 and 153,473.20

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Solution

The fourth proportional to 275,985.70, 380,855.73 and 153,473.20 is: 211,790.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,985.70 : 380,855.73 = 153,473.20 : x
  2. Step 2: Convert to fraction form
    275,985.70/380,855.73 = 153,473.20/x
  3. Step 3: Cross multiply
    275,985.70x = 380,855.73 × 153,473.20
  4. Step 4: Simplify right side
    275,985.70x = 58,451,147,621.44
  5. Step 5: Solve for x
    x = 58,451,147,621.44/275,985.70
  6. Step 6: Final answer
    x = 211,790.49

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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.