Home / 285,476.80-393,926.20-158,120.50

Finding the Fourth Proportional to 285,476.80, 393,926.20 and 158,120.50

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Solution

The fourth proportional to 285,476.80, 393,926.20 and 158,120.50 is: 218,188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,476.80 : 393,926.20 = 158,120.50 : x
  2. Step 2: Convert to fraction form
    285,476.80/393,926.20 = 158,120.50/x
  3. Step 3: Cross multiply
    285,476.80x = 393,926.20 × 158,120.50
  4. Step 4: Simplify right side
    285,476.80x = 62,287,809,087.22
  5. Step 5: Solve for x
    x = 62,287,809,087.22/285,476.80
  6. Step 6: Final answer
    x = 218,188.69

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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.