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Finding the Fourth Proportional to 275,877.28, 380,732.70 and 155,024.20

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Solution

The fourth proportional to 275,877.28, 380,732.70 and 155,024.20 is: 213,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,877.28 : 380,732.70 = 155,024.20 : x
  2. Step 2: Convert to fraction form
    275,877.28/380,732.70 = 155,024.20/x
  3. Step 3: Cross multiply
    275,877.28x = 380,732.70 × 155,024.20
  4. Step 4: Simplify right side
    275,877.28x = 59,022,782,231.34
  5. Step 5: Solve for x
    x = 59,022,782,231.34/275,877.28
  6. Step 6: Final answer
    x = 213,945.79

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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.