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Finding the Fourth Proportional to 485,999.00, 670,679.05 and 271,139.11

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Solution

The fourth proportional to 485,999.00, 670,679.05 and 271,139.11 is: 374,172.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,999.00 : 670,679.05 = 271,139.11 : x
  2. Step 2: Convert to fraction form
    485,999.00/670,679.05 = 271,139.11/x
  3. Step 3: Cross multiply
    485,999.00x = 670,679.05 × 271,139.11
  4. Step 4: Simplify right side
    485,999.00x = 181,847,321,876.48
  5. Step 5: Solve for x
    x = 181,847,321,876.48/485,999.00
  6. Step 6: Final answer
    x = 374,172.21

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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.