Home / 285,936.80-394,640.10-158,653.40

Finding the Fourth Proportional to 285,936.80, 394,640.10 and 158,653.40

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Solution

The fourth proportional to 285,936.80, 394,640.10 and 158,653.40 is: 218,967.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,936.80 : 394,640.10 = 158,653.40 : x
  2. Step 2: Convert to fraction form
    285,936.80/394,640.10 = 158,653.40/x
  3. Step 3: Cross multiply
    285,936.80x = 394,640.10 × 158,653.40
  4. Step 4: Simplify right side
    285,936.80x = 62,610,993,641.34
  5. Step 5: Solve for x
    x = 62,610,993,641.34/285,936.80
  6. Step 6: Final answer
    x = 218,967.95

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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.