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Finding the Fourth Proportional to 475,215.66, 655,815.69 and 271,299.78

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Solution

The fourth proportional to 475,215.66, 655,815.69 and 271,299.78 is: 374,404.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,215.66 : 655,815.69 = 271,299.78 : x
  2. Step 2: Convert to fraction form
    475,215.66/655,815.69 = 271,299.78/x
  3. Step 3: Cross multiply
    475,215.66x = 655,815.69 × 271,299.78
  4. Step 4: Simplify right side
    475,215.66x = 177,922,652,417.55
  5. Step 5: Solve for x
    x = 177,922,652,417.55/475,215.66
  6. Step 6: Final answer
    x = 374,404.02

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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.