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Finding the Fourth Proportional to 485,902.68, 670,546.78 and 271,056.66

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Solution

The fourth proportional to 485,902.68, 670,546.78 and 271,056.66 is: 374,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,902.68 : 670,546.78 = 271,056.66 : x
  2. Step 2: Convert to fraction form
    485,902.68/670,546.78 = 271,056.66/x
  3. Step 3: Cross multiply
    485,902.68x = 670,546.78 × 271,056.66
  4. Step 4: Simplify right side
    485,902.68x = 181,756,169,205.27
  5. Step 5: Solve for x
    x = 181,756,169,205.27/485,902.68
  6. Step 6: Final answer
    x = 374,058.79

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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.