Home / 381,286.15-526,184.57-209,204.07

Finding the Fourth Proportional to 381,286.15, 526,184.57 and 209,204.07

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Solution

The fourth proportional to 381,286.15, 526,184.57 and 209,204.07 is: 288,706.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,286.15 : 526,184.57 = 209,204.07 : x
  2. Step 2: Convert to fraction form
    381,286.15/526,184.57 = 209,204.07/x
  3. Step 3: Cross multiply
    381,286.15x = 526,184.57 × 209,204.07
  4. Step 4: Simplify right side
    381,286.15x = 110,079,952,299.74
  5. Step 5: Solve for x
    x = 110,079,952,299.74/381,286.15
  6. Step 6: Final answer
    x = 288,706.93

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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.