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Finding the Fourth Proportional to 394,368.60, 591,617.70 and 169,836.60

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Solution

The fourth proportional to 394,368.60, 591,617.70 and 169,836.60 is: 254,782.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,368.60 : 591,617.70 = 169,836.60 : x
  2. Step 2: Convert to fraction form
    394,368.60/591,617.70 = 169,836.60/x
  3. Step 3: Cross multiply
    394,368.60x = 591,617.70 × 169,836.60
  4. Step 4: Simplify right side
    394,368.60x = 100,478,338,667.82
  5. Step 5: Solve for x
    x = 100,478,338,667.82/394,368.60
  6. Step 6: Final answer
    x = 254,782.81

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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.