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Finding the Fourth Proportional to 285,838.08, 394,480.20 and 158,554.80

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Solution

The fourth proportional to 285,838.08, 394,480.20 and 158,554.80 is: 218,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,838.08 : 394,480.20 = 158,554.80 : x
  2. Step 2: Convert to fraction form
    285,838.08/394,480.20 = 158,554.80/x
  3. Step 3: Cross multiply
    285,838.08x = 394,480.20 × 158,554.80
  4. Step 4: Simplify right side
    285,838.08x = 62,546,729,214.96
  5. Step 5: Solve for x
    x = 62,546,729,214.96/285,838.08
  6. Step 6: Final answer
    x = 218,818.74

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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.