Home / 285,725.90-394,306.53-156,661.70

Finding the Fourth Proportional to 285,725.90, 394,306.53 and 156,661.70

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Solution

The fourth proportional to 285,725.90, 394,306.53 and 156,661.70 is: 216,195.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,725.90 : 394,306.53 = 156,661.70 : x
  2. Step 2: Convert to fraction form
    285,725.90/394,306.53 = 156,661.70/x
  3. Step 3: Cross multiply
    285,725.90x = 394,306.53 × 156,661.70
  4. Step 4: Simplify right side
    285,725.90x = 61,772,731,310.90
  5. Step 5: Solve for x
    x = 61,772,731,310.90/285,725.90
  6. Step 6: Final answer
    x = 216,195.77

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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.