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Finding the Fourth Proportional to 171,039.20, 256,558.80 and 171,039.20

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Solution

The fourth proportional to 171,039.20, 256,558.80 and 171,039.20 is: 256,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,039.20 : 256,558.80 = 171,039.20 : x
  2. Step 2: Convert to fraction form
    171,039.20/256,558.80 = 171,039.20/x
  3. Step 3: Cross multiply
    171,039.20x = 256,558.80 × 171,039.20
  4. Step 4: Simplify right side
    171,039.20x = 43,881,611,904.96
  5. Step 5: Solve for x
    x = 43,881,611,904.96/171,039.20
  6. Step 6: Final answer
    x = 256,558.80

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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.