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Finding the Fourth Proportional to 285,672.80, 394,200.60 and 158,345.66

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Solution

The fourth proportional to 285,672.80, 394,200.60 and 158,345.66 is: 218,501.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,672.80 : 394,200.60 = 158,345.66 : x
  2. Step 2: Convert to fraction form
    285,672.80/394,200.60 = 158,345.66/x
  3. Step 3: Cross multiply
    285,672.80x = 394,200.60 × 158,345.66
  4. Step 4: Simplify right side
    285,672.80x = 62,419,954,179.40
  5. Step 5: Solve for x
    x = 62,419,954,179.40/285,672.80
  6. Step 6: Final answer
    x = 218,501.57

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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.