Home / 276,768.90-381,977.37-155,933.51

Finding the Fourth Proportional to 276,768.90, 381,977.37 and 155,933.51

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Solution

The fourth proportional to 276,768.90, 381,977.37 and 155,933.51 is: 215,208.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,768.90 : 381,977.37 = 155,933.51 : x
  2. Step 2: Convert to fraction form
    276,768.90/381,977.37 = 155,933.51/x
  3. Step 3: Cross multiply
    276,768.90x = 381,977.37 × 155,933.51
  4. Step 4: Simplify right side
    276,768.90x = 59,563,070,134.78
  5. Step 5: Solve for x
    x = 59,563,070,134.78/276,768.90
  6. Step 6: Final answer
    x = 215,208.68

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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.