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Finding the Fourth Proportional to 253,638.82, 380,495.60 and 76,160.13

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Solution

The fourth proportional to 253,638.82, 380,495.60 and 76,160.13 is: 114,251.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,638.82 : 380,495.60 = 76,160.13 : x
  2. Step 2: Convert to fraction form
    253,638.82/380,495.60 = 76,160.13/x
  3. Step 3: Cross multiply
    253,638.82x = 380,495.60 × 76,160.13
  4. Step 4: Simplify right side
    253,638.82x = 28,978,593,028.39
  5. Step 5: Solve for x
    x = 28,978,593,028.39/253,638.82
  6. Step 6: Final answer
    x = 114,251.41

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1.5x scale

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.