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Finding the Fourth Proportional to 393,019.20, 589,643.62 and 126,773.82

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Solution

The fourth proportional to 393,019.20, 589,643.62 and 126,773.82 is: 190,197.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,019.20 : 589,643.62 = 126,773.82 : x
  2. Step 2: Convert to fraction form
    393,019.20/589,643.62 = 126,773.82/x
  3. Step 3: Cross multiply
    393,019.20x = 589,643.62 × 126,773.82
  4. Step 4: Simplify right side
    393,019.20x = 74,751,374,146.03
  5. Step 5: Solve for x
    x = 74,751,374,146.03/393,019.20
  6. Step 6: Final answer
    x = 190,197.77

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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.