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Finding the Fourth Proportional to 171,803.80, 257,268.30 and 163,930.60

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Solution

The fourth proportional to 171,803.80, 257,268.30 and 163,930.60 is: 245,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,803.80 : 257,268.30 = 163,930.60 : x
  2. Step 2: Convert to fraction form
    171,803.80/257,268.30 = 163,930.60/x
  3. Step 3: Cross multiply
    171,803.80x = 257,268.30 × 163,930.60
  4. Step 4: Simplify right side
    171,803.80x = 42,174,146,779.98
  5. Step 5: Solve for x
    x = 42,174,146,779.98/171,803.80
  6. Step 6: Final answer
    x = 245,478.54

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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.