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Finding the Fourth Proportional to 275,553.31, 380,285.55 and 154,702.54

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Solution

The fourth proportional to 275,553.31, 380,285.55 and 154,702.54 is: 213,501.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,553.31 : 380,285.55 = 154,702.54 : x
  2. Step 2: Convert to fraction form
    275,553.31/380,285.55 = 154,702.54/x
  3. Step 3: Cross multiply
    275,553.31x = 380,285.55 × 154,702.54
  4. Step 4: Simplify right side
    275,553.31x = 58,831,140,510.30
  5. Step 5: Solve for x
    x = 58,831,140,510.30/275,553.31
  6. Step 6: Final answer
    x = 213,501.85

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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.