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Finding the Fourth Proportional to 660,241.79, 990,179.76 and 233,721.43

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Solution

The fourth proportional to 660,241.79, 990,179.76 and 233,721.43 is: 350,517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,241.79 : 990,179.76 = 233,721.43 : x
  2. Step 2: Convert to fraction form
    660,241.79/990,179.76 = 233,721.43/x
  3. Step 3: Cross multiply
    660,241.79x = 990,179.76 × 233,721.43
  4. Step 4: Simplify right side
    660,241.79x = 231,426,226,112.35
  5. Step 5: Solve for x
    x = 231,426,226,112.35/660,241.79
  6. Step 6: Final answer
    x = 350,517.39

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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.