Home / 388,171.20-582,251.52-99,981.21

Finding the Fourth Proportional to 388,171.20, 582,251.52 and 99,981.21

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Solution

The fourth proportional to 388,171.20, 582,251.52 and 99,981.21 is: 149,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,171.20 : 582,251.52 = 99,981.21 : x
  2. Step 2: Convert to fraction form
    388,171.20/582,251.52 = 99,981.21/x
  3. Step 3: Cross multiply
    388,171.20x = 582,251.52 × 99,981.21
  4. Step 4: Simplify right side
    388,171.20x = 58,214,211,493.94
  5. Step 5: Solve for x
    x = 58,214,211,493.94/388,171.20
  6. Step 6: Final answer
    x = 149,970.46

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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.