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Finding the Fourth Proportional to 394,861.60, 591,903.60 and 195,212.80

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Solution

The fourth proportional to 394,861.60, 591,903.60 and 195,212.80 is: 292,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,861.60 : 591,903.60 = 195,212.80 : x
  2. Step 2: Convert to fraction form
    394,861.60/591,903.60 = 195,212.80/x
  3. Step 3: Cross multiply
    394,861.60x = 591,903.60 × 195,212.80
  4. Step 4: Simplify right side
    394,861.60x = 115,547,159,086.08
  5. Step 5: Solve for x
    x = 115,547,159,086.08/394,861.60
  6. Step 6: Final answer
    x = 292,626.98

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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.