Home / 285,495.19-393,996.27-158,170.78

Finding the Fourth Proportional to 285,495.19, 393,996.27 and 158,170.78

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Solution

The fourth proportional to 285,495.19, 393,996.27 and 158,170.78 is: 218,282.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,495.19 : 393,996.27 = 158,170.78 : x
  2. Step 2: Convert to fraction form
    285,495.19/393,996.27 = 158,170.78/x
  3. Step 3: Cross multiply
    285,495.19x = 393,996.27 × 158,170.78
  4. Step 4: Simplify right side
    285,495.19x = 62,318,697,538.92
  5. Step 5: Solve for x
    x = 62,318,697,538.92/285,495.19
  6. Step 6: Final answer
    x = 218,282.83

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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.