Home / 285,217.20-393,601.68-157,890.06

Finding the Fourth Proportional to 285,217.20, 393,601.68 and 157,890.06

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Solution

The fourth proportional to 285,217.20, 393,601.68 and 157,890.06 is: 217,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,217.20 : 393,601.68 = 157,890.06 : x
  2. Step 2: Convert to fraction form
    285,217.20/393,601.68 = 157,890.06/x
  3. Step 3: Cross multiply
    285,217.20x = 393,601.68 × 157,890.06
  4. Step 4: Simplify right side
    285,217.20x = 62,145,792,871.30
  5. Step 5: Solve for x
    x = 62,145,792,871.30/285,217.20
  6. Step 6: Final answer
    x = 217,889.36

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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.