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Finding the Fourth Proportional to 486,405.46, 671,221.65 and 271,554.58

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Solution

The fourth proportional to 486,405.46, 671,221.65 and 271,554.58 is: 374,735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,405.46 : 671,221.65 = 271,554.58 : x
  2. Step 2: Convert to fraction form
    486,405.46/671,221.65 = 271,554.58/x
  3. Step 3: Cross multiply
    486,405.46x = 671,221.65 × 271,554.58
  4. Step 4: Simplify right side
    486,405.46x = 182,273,313,252.66
  5. Step 5: Solve for x
    x = 182,273,313,252.66/486,405.46
  6. Step 6: Final answer
    x = 374,735.34

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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.