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Finding the Fourth Proportional to 170,825.70, 256,238.55 and 162,660.90

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Solution

The fourth proportional to 170,825.70, 256,238.55 and 162,660.90 is: 243,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,825.70 : 256,238.55 = 162,660.90 : x
  2. Step 2: Convert to fraction form
    170,825.70/256,238.55 = 162,660.90/x
  3. Step 3: Cross multiply
    170,825.70x = 256,238.55 × 162,660.90
  4. Step 4: Simplify right side
    170,825.70x = 41,679,993,157.70
  5. Step 5: Solve for x
    x = 41,679,993,157.70/170,825.70
  6. Step 6: Final answer
    x = 243,991.35

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1.5x scale

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.