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Finding the Fourth Proportional to 393,893.46, 590,852.35 and 153,997.79

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Solution

The fourth proportional to 393,893.46, 590,852.35 and 153,997.79 is: 231,001.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,893.46 : 590,852.35 = 153,997.79 : x
  2. Step 2: Convert to fraction form
    393,893.46/590,852.35 = 153,997.79/x
  3. Step 3: Cross multiply
    393,893.46x = 590,852.35 × 153,997.79
  4. Step 4: Simplify right side
    393,893.46x = 90,989,954,992.75
  5. Step 5: Solve for x
    x = 90,989,954,992.75/393,893.46
  6. Step 6: Final answer
    x = 231,001.43

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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.