Home / 276,403.38-381,456.03-155,556.30

Finding the Fourth Proportional to 276,403.38, 381,456.03 and 155,556.30

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Solution

The fourth proportional to 276,403.38, 381,456.03 and 155,556.30 is: 214,678.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,403.38 : 381,456.03 = 155,556.30 : x
  2. Step 2: Convert to fraction form
    276,403.38/381,456.03 = 155,556.30/x
  3. Step 3: Cross multiply
    276,403.38x = 381,456.03 × 155,556.30
  4. Step 4: Simplify right side
    276,403.38x = 59,337,888,639.49
  5. Step 5: Solve for x
    x = 59,337,888,639.49/276,403.38
  6. Step 6: Final answer
    x = 214,678.59

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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.