Home / 276,768.36-381,938.65-155,948.56

Finding the Fourth Proportional to 276,768.36, 381,938.65 and 155,948.56

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Solution

The fourth proportional to 276,768.36, 381,938.65 and 155,948.56 is: 215,208.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,768.36 : 381,938.65 = 155,948.56 : x
  2. Step 2: Convert to fraction form
    276,768.36/381,938.65 = 155,948.56/x
  3. Step 3: Cross multiply
    276,768.36x = 381,938.65 × 155,948.56
  4. Step 4: Simplify right side
    276,768.36x = 59,562,781,131.13
  5. Step 5: Solve for x
    x = 59,562,781,131.13/276,768.36
  6. Step 6: Final answer
    x = 215,208.06

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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.