Home / 263,001.80-394,502.70-221,011.40

Finding the Fourth Proportional to 263,001.80, 394,502.70 and 221,011.40

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Solution

The fourth proportional to 263,001.80, 394,502.70 and 221,011.40 is: 331,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,001.80 : 394,502.70 = 221,011.40 : x
  2. Step 2: Convert to fraction form
    263,001.80/394,502.70 = 221,011.40/x
  3. Step 3: Cross multiply
    263,001.80x = 394,502.70 × 221,011.40
  4. Step 4: Simplify right side
    263,001.80x = 87,189,594,030.78
  5. Step 5: Solve for x
    x = 87,189,594,030.78/263,001.80
  6. Step 6: Final answer
    x = 331,517.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.