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Finding the Fourth Proportional to 399,783.60, 599,456.70 and 162,858.60

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Solution

The fourth proportional to 399,783.60, 599,456.70 and 162,858.60 is: 244,198.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,783.60 : 599,456.70 = 162,858.60 : x
  2. Step 2: Convert to fraction form
    399,783.60/599,456.70 = 162,858.60/x
  3. Step 3: Cross multiply
    399,783.60x = 599,456.70 × 162,858.60
  4. Step 4: Simplify right side
    399,783.60x = 97,626,678,922.62
  5. Step 5: Solve for x
    x = 97,626,678,922.62/399,783.60
  6. Step 6: Final answer
    x = 244,198.81

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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.