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Finding the Fourth Proportional to 170,728.70, 239,370.10 and 170,728.70

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Solution

The fourth proportional to 170,728.70, 239,370.10 and 170,728.70 is: 239,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,728.70 : 239,370.10 = 170,728.70 : x
  2. Step 2: Convert to fraction form
    170,728.70/239,370.10 = 170,728.70/x
  3. Step 3: Cross multiply
    170,728.70x = 239,370.10 × 170,728.70
  4. Step 4: Simplify right side
    170,728.70x = 40,867,345,991.87
  5. Step 5: Solve for x
    x = 40,867,345,991.87/170,728.70
  6. Step 6: Final answer
    x = 239,370.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.