Home / 285,684.40-394,235.91-156,618.46

Finding the Fourth Proportional to 285,684.40, 394,235.91 and 156,618.46

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Solution

The fourth proportional to 285,684.40, 394,235.91 and 156,618.46 is: 216,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,684.40 : 394,235.91 = 156,618.46 : x
  2. Step 2: Convert to fraction form
    285,684.40/394,235.91 = 156,618.46/x
  3. Step 3: Cross multiply
    285,684.40x = 394,235.91 × 156,618.46
  4. Step 4: Simplify right side
    285,684.40x = 61,744,621,593.69
  5. Step 5: Solve for x
    x = 61,744,621,593.69/285,684.40
  6. Step 6: Final answer
    x = 216,128.78

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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.