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Finding the Fourth Proportional to 275,533.78, 380,236.42 and 154,675.30

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Solution

The fourth proportional to 275,533.78, 380,236.42 and 154,675.30 is: 213,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,533.78 : 380,236.42 = 154,675.30 : x
  2. Step 2: Convert to fraction form
    275,533.78/380,236.42 = 154,675.30/x
  3. Step 3: Cross multiply
    275,533.78x = 380,236.42 × 154,675.30
  4. Step 4: Simplify right side
    275,533.78x = 58,813,182,334.43
  5. Step 5: Solve for x
    x = 58,813,182,334.43/275,533.78
  6. Step 6: Final answer
    x = 213,451.80

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1.5x scale

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.