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Finding the Fourth Proportional to 171,625.30, 257,486.55 and 53,308.60

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Solution

The fourth proportional to 171,625.30, 257,486.55 and 53,308.60 is: 79,978.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,625.30 : 257,486.55 = 53,308.60 : x
  2. Step 2: Convert to fraction form
    171,625.30/257,486.55 = 53,308.60/x
  3. Step 3: Cross multiply
    171,625.30x = 257,486.55 × 53,308.60
  4. Step 4: Simplify right side
    171,625.30x = 13,726,247,499.33
  5. Step 5: Solve for x
    x = 13,726,247,499.33/171,625.30
  6. Step 6: Final answer
    x = 79,978.00

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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.