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Finding the Fourth Proportional to 171,653.80, 257,480.70 and 162,905.80

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Solution

The fourth proportional to 171,653.80, 257,480.70 and 162,905.80 is: 244,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,653.80 : 257,480.70 = 162,905.80 : x
  2. Step 2: Convert to fraction form
    171,653.80/257,480.70 = 162,905.80/x
  3. Step 3: Cross multiply
    171,653.80x = 257,480.70 × 162,905.80
  4. Step 4: Simplify right side
    171,653.80x = 41,945,099,418.06
  5. Step 5: Solve for x
    x = 41,945,099,418.06/171,653.80
  6. Step 6: Final answer
    x = 244,358.70

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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.