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Finding the Fourth Proportional to 285,797.70, 394,401.39 and 156,737.08

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Solution

The fourth proportional to 285,797.70, 394,401.39 and 156,737.08 is: 216,297.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,797.70 : 394,401.39 = 156,737.08 : x
  2. Step 2: Convert to fraction form
    285,797.70/394,401.39 = 156,737.08/x
  3. Step 3: Cross multiply
    285,797.70x = 394,401.39 × 156,737.08
  4. Step 4: Simplify right side
    285,797.70x = 61,817,322,121.78
  5. Step 5: Solve for x
    x = 61,817,322,121.78/285,797.70
  6. Step 6: Final answer
    x = 216,297.48

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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.