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Finding the Fourth Proportional to 285,552.21, 394,064.73 and 158,230.56

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Solution

The fourth proportional to 285,552.21, 394,064.73 and 158,230.56 is: 218,359.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,552.21 : 394,064.73 = 158,230.56 : x
  2. Step 2: Convert to fraction form
    285,552.21/394,064.73 = 158,230.56/x
  3. Step 3: Cross multiply
    285,552.21x = 394,064.73 × 158,230.56
  4. Step 4: Simplify right side
    285,552.21x = 62,353,082,904.15
  5. Step 5: Solve for x
    x = 62,353,082,904.15/285,552.21
  6. Step 6: Final answer
    x = 218,359.66

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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.