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Finding the Fourth Proportional to 394,083.40, 590,979.30 and 127,852.60

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Solution

The fourth proportional to 394,083.40, 590,979.30 and 127,852.60 is: 191,731.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,083.40 : 590,979.30 = 127,852.60 : x
  2. Step 2: Convert to fraction form
    394,083.40/590,979.30 = 127,852.60/x
  3. Step 3: Cross multiply
    394,083.40x = 590,979.30 × 127,852.60
  4. Step 4: Simplify right side
    394,083.40x = 75,558,240,051.18
  5. Step 5: Solve for x
    x = 75,558,240,051.18/394,083.40
  6. Step 6: Final answer
    x = 191,731.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.