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Finding the Fourth Proportional to 393,893.72, 590,852.72 and 153,998.04

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Solution

The fourth proportional to 393,893.72, 590,852.72 and 153,998.04 is: 231,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,893.72 : 590,852.72 = 153,998.04 : x
  2. Step 2: Convert to fraction form
    393,893.72/590,852.72 = 153,998.04/x
  3. Step 3: Cross multiply
    393,893.72x = 590,852.72 × 153,998.04
  4. Step 4: Simplify right side
    393,893.72x = 90,990,163,409.36
  5. Step 5: Solve for x
    x = 90,990,163,409.36/393,893.72
  6. Step 6: Final answer
    x = 231,001.81

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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.