Home / 276,774.30-381,971.70-155,939.31

Finding the Fourth Proportional to 276,774.30, 381,971.70 and 155,939.31

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Solution

The fourth proportional to 276,774.30, 381,971.70 and 155,939.31 is: 215,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,774.30 : 381,971.70 = 155,939.31 : x
  2. Step 2: Convert to fraction form
    276,774.30/381,971.70 = 155,939.31/x
  3. Step 3: Cross multiply
    276,774.30x = 381,971.70 × 155,939.31
  4. Step 4: Simplify right side
    276,774.30x = 59,564,403,337.53
  5. Step 5: Solve for x
    x = 59,564,403,337.53/276,774.30
  6. Step 6: Final answer
    x = 215,209.30

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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.