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Finding the Fourth Proportional to 388,355.40, 582,504.30 and 163,657.80

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Solution

The fourth proportional to 388,355.40, 582,504.30 and 163,657.80 is: 245,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,355.40 : 582,504.30 = 163,657.80 : x
  2. Step 2: Convert to fraction form
    388,355.40/582,504.30 = 163,657.80/x
  3. Step 3: Cross multiply
    388,355.40x = 582,504.30 × 163,657.80
  4. Step 4: Simplify right side
    388,355.40x = 95,331,372,228.54
  5. Step 5: Solve for x
    x = 95,331,372,228.54/388,355.40
  6. Step 6: Final answer
    x = 245,474.56

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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.