Home / 276,680.16-381,814.56-155,821.68

Finding the Fourth Proportional to 276,680.16, 381,814.56 and 155,821.68

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Solution

The fourth proportional to 276,680.16, 381,814.56 and 155,821.68 is: 215,031.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,680.16 : 381,814.56 = 155,821.68 : x
  2. Step 2: Convert to fraction form
    276,680.16/381,814.56 = 155,821.68/x
  3. Step 3: Cross multiply
    276,680.16x = 381,814.56 × 155,821.68
  4. Step 4: Simplify right side
    276,680.16x = 59,494,986,187.66
  5. Step 5: Solve for x
    x = 59,494,986,187.66/276,680.16
  6. Step 6: Final answer
    x = 215,031.63

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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.