Home / 253,581.08-380,408.70-76,102.11

Finding the Fourth Proportional to 253,581.08, 380,408.70 and 76,102.11

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Solution

The fourth proportional to 253,581.08, 380,408.70 and 76,102.11 is: 114,164.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,581.08 : 380,408.70 = 76,102.11 : x
  2. Step 2: Convert to fraction form
    253,581.08/380,408.70 = 76,102.11/x
  3. Step 3: Cross multiply
    253,581.08x = 380,408.70 × 76,102.11
  4. Step 4: Simplify right side
    253,581.08x = 28,949,904,732.36
  5. Step 5: Solve for x
    x = 28,949,904,732.36/253,581.08
  6. Step 6: Final answer
    x = 114,164.30

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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.