Home / 285,142.56-393,429.86-194,686.90

Finding the Fourth Proportional to 285,142.56, 393,429.86 and 194,686.90

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Solution

The fourth proportional to 285,142.56, 393,429.86 and 194,686.90 is: 268,622.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,142.56 : 393,429.86 = 194,686.90 : x
  2. Step 2: Convert to fraction form
    285,142.56/393,429.86 = 194,686.90/x
  3. Step 3: Cross multiply
    285,142.56x = 393,429.86 × 194,686.90
  4. Step 4: Simplify right side
    285,142.56x = 76,595,639,810.83
  5. Step 5: Solve for x
    x = 76,595,639,810.83/285,142.56
  6. Step 6: Final answer
    x = 268,622.26

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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.