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Finding the Fourth Proportional to 285,839.92, 394,430.64 and 165,020.20

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Solution

The fourth proportional to 285,839.92, 394,430.64 and 165,020.20 is: 227,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,839.92 : 394,430.64 = 165,020.20 : x
  2. Step 2: Convert to fraction form
    285,839.92/394,430.64 = 165,020.20/x
  3. Step 3: Cross multiply
    285,839.92x = 394,430.64 × 165,020.20
  4. Step 4: Simplify right side
    285,839.92x = 65,089,023,098.93
  5. Step 5: Solve for x
    x = 65,089,023,098.93/285,839.92
  6. Step 6: Final answer
    x = 227,711.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.