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Finding the Fourth Proportional to 285,976.79, 394,484 and 178,359.99

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Solution

The fourth proportional to 285,976.79, 394,484 and 178,359.99 is: 246,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,976.79 : 394,484 = 178,359.99 : x
  2. Step 2: Convert to fraction form
    285,976.79/394,484 = 178,359.99/x
  3. Step 3: Cross multiply
    285,976.79x = 394,484 × 178,359.99
  4. Step 4: Simplify right side
    285,976.79x = 70,360,162,295.16
  5. Step 5: Solve for x
    x = 70,360,162,295.16/285,976.79
  6. Step 6: Final answer
    x = 246,034.52

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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.