Home / 254,309.22-381,478.01-76,811.49

Finding the Fourth Proportional to 254,309.22, 381,478.01 and 76,811.49

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Solution

The fourth proportional to 254,309.22, 381,478.01 and 76,811.49 is: 115,221.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,309.22 : 381,478.01 = 76,811.49 : x
  2. Step 2: Convert to fraction form
    254,309.22/381,478.01 = 76,811.49/x
  3. Step 3: Cross multiply
    254,309.22x = 381,478.01 × 76,811.49
  4. Step 4: Simplify right side
    254,309.22x = 29,301,893,966.28
  5. Step 5: Solve for x
    x = 29,301,893,966.28/254,309.22
  6. Step 6: Final answer
    x = 115,221.52

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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.