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Finding the Fourth Proportional to 388,252.40, 582,108.39 and 171,993.67

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Solution

The fourth proportional to 388,252.40, 582,108.39 and 171,993.67 is: 257,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,252.40 : 582,108.39 = 171,993.67 : x
  2. Step 2: Convert to fraction form
    388,252.40/582,108.39 = 171,993.67/x
  3. Step 3: Cross multiply
    388,252.40x = 582,108.39 × 171,993.67
  4. Step 4: Simplify right side
    388,252.40x = 100,118,956,878.62
  5. Step 5: Solve for x
    x = 100,118,956,878.62/388,252.40
  6. Step 6: Final answer
    x = 257,870.80

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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.