Home / 381,786.80-526,890.16-212,020.96

Finding the Fourth Proportional to 381,786.80, 526,890.16 and 212,020.96

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Solution

The fourth proportional to 381,786.80, 526,890.16 and 212,020.96 is: 292,602.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,786.80 : 526,890.16 = 212,020.96 : x
  2. Step 2: Convert to fraction form
    381,786.80/526,890.16 = 212,020.96/x
  3. Step 3: Cross multiply
    381,786.80x = 526,890.16 × 212,020.96
  4. Step 4: Simplify right side
    381,786.80x = 111,711,757,537.75
  5. Step 5: Solve for x
    x = 111,711,757,537.75/381,786.80
  6. Step 6: Final answer
    x = 292,602.46

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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.