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Finding the Fourth Proportional to 285,977.48, 394,484.94 and 178,360.67

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Solution

The fourth proportional to 285,977.48, 394,484.94 and 178,360.67 is: 246,035.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,977.48 : 394,484.94 = 178,360.67 : x
  2. Step 2: Convert to fraction form
    285,977.48/394,484.94 = 178,360.67/x
  3. Step 3: Cross multiply
    285,977.48x = 394,484.94 × 178,360.67
  4. Step 4: Simplify right side
    285,977.48x = 70,360,599,189.52
  5. Step 5: Solve for x
    x = 70,360,599,189.52/285,977.48
  6. Step 6: Final answer
    x = 246,035.46

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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.