Home / 393,917.43-543,598.90-221,834.70

Finding the Fourth Proportional to 393,917.43, 543,598.90 and 221,834.70

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Solution

The fourth proportional to 393,917.43, 543,598.90 and 221,834.70 is: 306,127.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,917.43 : 543,598.90 = 221,834.70 : x
  2. Step 2: Convert to fraction form
    393,917.43/543,598.90 = 221,834.70/x
  3. Step 3: Cross multiply
    393,917.43x = 543,598.90 × 221,834.70
  4. Step 4: Simplify right side
    393,917.43x = 120,589,098,347.24
  5. Step 5: Solve for x
    x = 120,589,098,347.24/393,917.43
  6. Step 6: Final answer
    x = 306,127.86

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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.