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Finding the Fourth Proportional to 275,982.32, 380,866.40 and 155,123.24

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Solution

The fourth proportional to 275,982.32, 380,866.40 and 155,123.24 is: 214,076.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,982.32 : 380,866.40 = 155,123.24 : x
  2. Step 2: Convert to fraction form
    275,982.32/380,866.40 = 155,123.24/x
  3. Step 3: Cross multiply
    275,982.32x = 380,866.40 × 155,123.24
  4. Step 4: Simplify right side
    275,982.32x = 59,081,227,295.19
  5. Step 5: Solve for x
    x = 59,081,227,295.19/275,982.32
  6. Step 6: Final answer
    x = 214,076.13

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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.