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Finding the Fourth Proportional to 248,019.53, 342,339.78 and 161,991.66

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Solution

The fourth proportional to 248,019.53, 342,339.78 and 161,991.66 is: 223,596.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,019.53 : 342,339.78 = 161,991.66 : x
  2. Step 2: Convert to fraction form
    248,019.53/342,339.78 = 161,991.66/x
  3. Step 3: Cross multiply
    248,019.53x = 342,339.78 × 161,991.66
  4. Step 4: Simplify right side
    248,019.53x = 55,456,188,569.93
  5. Step 5: Solve for x
    x = 55,456,188,569.93/248,019.53
  6. Step 6: Final answer
    x = 223,596.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.