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Finding the Fourth Proportional to 205,396.80, 308,095.20 and 163,924.80

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Solution

The fourth proportional to 205,396.80, 308,095.20 and 163,924.80 is: 245,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,396.80 : 308,095.20 = 163,924.80 : x
  2. Step 2: Convert to fraction form
    205,396.80/308,095.20 = 163,924.80/x
  3. Step 3: Cross multiply
    205,396.80x = 308,095.20 × 163,924.80
  4. Step 4: Simplify right side
    205,396.80x = 50,504,444,040.96
  5. Step 5: Solve for x
    x = 50,504,444,040.96/205,396.80
  6. Step 6: Final answer
    x = 245,887.20

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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.