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Finding the Fourth Proportional to 399,890.80, 599,544.60 and 163,111.60

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Solution

The fourth proportional to 399,890.80, 599,544.60 and 163,111.60 is: 244,548.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,890.80 : 599,544.60 = 163,111.60 : x
  2. Step 2: Convert to fraction form
    399,890.80/599,544.60 = 163,111.60/x
  3. Step 3: Cross multiply
    399,890.80x = 599,544.60 × 163,111.60
  4. Step 4: Simplify right side
    399,890.80x = 97,792,678,977.36
  5. Step 5: Solve for x
    x = 97,792,678,977.36/399,890.80
  6. Step 6: Final answer
    x = 244,548.46

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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.