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Finding the Fourth Proportional to 275,508.10, 380,239.56 and 153,028

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Solution

The fourth proportional to 275,508.10, 380,239.56 and 153,028 is: 211,199.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,508.10 : 380,239.56 = 153,028 : x
  2. Step 2: Convert to fraction form
    275,508.10/380,239.56 = 153,028/x
  3. Step 3: Cross multiply
    275,508.10x = 380,239.56 × 153,028
  4. Step 4: Simplify right side
    275,508.10x = 58,187,299,387.68
  5. Step 5: Solve for x
    x = 58,187,299,387.68/275,508.10
  6. Step 6: Final answer
    x = 211,199.96

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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.