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Finding the Fourth Proportional to 666,015.48, 999,086.31 and 186,243.26

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Solution

The fourth proportional to 666,015.48, 999,086.31 and 186,243.26 is: 279,382.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,015.48 : 999,086.31 = 186,243.26 : x
  2. Step 2: Convert to fraction form
    666,015.48/999,086.31 = 186,243.26/x
  3. Step 3: Cross multiply
    666,015.48x = 999,086.31 × 186,243.26
  4. Step 4: Simplify right side
    666,015.48x = 186,073,086,400.34
  5. Step 5: Solve for x
    x = 186,073,086,400.34/666,015.48
  6. Step 6: Final answer
    x = 279,382.52

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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.