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Finding the Fourth Proportional to 275,961.66, 380,828.16 and 155,108.04

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Solution

The fourth proportional to 275,961.66, 380,828.16 and 155,108.04 is: 214,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,961.66 : 380,828.16 = 155,108.04 : x
  2. Step 2: Convert to fraction form
    275,961.66/380,828.16 = 155,108.04/x
  3. Step 3: Cross multiply
    275,961.66x = 380,828.16 × 155,108.04
  4. Step 4: Simplify right side
    275,961.66x = 59,069,509,474.41
  5. Step 5: Solve for x
    x = 59,069,509,474.41/275,961.66
  6. Step 6: Final answer
    x = 214,049.70

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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.