Home / 254,247.09-381,359.70-76,748.81

Finding the Fourth Proportional to 254,247.09, 381,359.70 and 76,748.81

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Solution

The fourth proportional to 254,247.09, 381,359.70 and 76,748.81 is: 115,119.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,247.09 : 381,359.70 = 76,748.81 : x
  2. Step 2: Convert to fraction form
    254,247.09/381,359.70 = 76,748.81/x
  3. Step 3: Cross multiply
    254,247.09x = 381,359.70 × 76,748.81
  4. Step 4: Simplify right side
    254,247.09x = 29,268,901,250.16
  5. Step 5: Solve for x
    x = 29,268,901,250.16/254,247.09
  6. Step 6: Final answer
    x = 115,119.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.