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Finding the Fourth Proportional to 393,776.30, 590,664.44 and 113,293.55

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Solution

The fourth proportional to 393,776.30, 590,664.44 and 113,293.55 is: 169,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,776.30 : 590,664.44 = 113,293.55 : x
  2. Step 2: Convert to fraction form
    393,776.30/590,664.44 = 113,293.55/x
  3. Step 3: Cross multiply
    393,776.30x = 590,664.44 × 113,293.55
  4. Step 4: Simplify right side
    393,776.30x = 66,918,473,026.26
  5. Step 5: Solve for x
    x = 66,918,473,026.26/393,776.30
  6. Step 6: Final answer
    x = 169,940.33

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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.