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Finding the Fourth Proportional to 285,697.39, 394,235.89 and 158,362.15

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Solution

The fourth proportional to 285,697.39, 394,235.89 and 158,362.15 is: 218,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,697.39 : 394,235.89 = 158,362.15 : x
  2. Step 2: Convert to fraction form
    285,697.39/394,235.89 = 158,362.15/x
  3. Step 3: Cross multiply
    285,697.39x = 394,235.89 × 158,362.15
  4. Step 4: Simplify right side
    285,697.39x = 62,432,043,147.56
  5. Step 5: Solve for x
    x = 62,432,043,147.56/285,697.39
  6. Step 6: Final answer
    x = 218,525.07

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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.