Home / 515,816.20-773,724.30-141,839.20

Finding the Fourth Proportional to 515,816.20, 773,724.30 and 141,839.20

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Solution

The fourth proportional to 515,816.20, 773,724.30 and 141,839.20 is: 212,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,816.20 : 773,724.30 = 141,839.20 : x
  2. Step 2: Convert to fraction form
    515,816.20/773,724.30 = 141,839.20/x
  3. Step 3: Cross multiply
    515,816.20x = 773,724.30 × 141,839.20
  4. Step 4: Simplify right side
    515,816.20x = 109,744,435,732.56
  5. Step 5: Solve for x
    x = 109,744,435,732.56/515,816.20
  6. Step 6: Final answer
    x = 212,758.80

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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.