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Finding the Fourth Proportional to 475,137.96, 655,388.33 and 311,805.06

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Solution

The fourth proportional to 475,137.96, 655,388.33 and 311,805.06 is: 430,092.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,137.96 : 655,388.33 = 311,805.06 : x
  2. Step 2: Convert to fraction form
    475,137.96/655,388.33 = 311,805.06/x
  3. Step 3: Cross multiply
    475,137.96x = 655,388.33 × 311,805.06
  4. Step 4: Simplify right side
    475,137.96x = 204,353,395,999.92
  5. Step 5: Solve for x
    x = 204,353,395,999.92/475,137.96
  6. Step 6: Final answer
    x = 430,092.76

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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.