Home / 285,312.11-393,727.86-154,489.12

Finding the Fourth Proportional to 285,312.11, 393,727.86 and 154,489.12

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Solution

The fourth proportional to 285,312.11, 393,727.86 and 154,489.12 is: 213,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,312.11 : 393,727.86 = 154,489.12 : x
  2. Step 2: Convert to fraction form
    285,312.11/393,727.86 = 154,489.12/x
  3. Step 3: Cross multiply
    285,312.11x = 393,727.86 × 154,489.12
  4. Step 4: Simplify right side
    285,312.11x = 60,826,669,626.56
  5. Step 5: Solve for x
    x = 60,826,669,626.56/285,312.11
  6. Step 6: Final answer
    x = 213,193.44

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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.