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Finding the Fourth Proportional to 305,485.08, 421,571.70 and 169,519.56

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Solution

The fourth proportional to 305,485.08, 421,571.70 and 169,519.56 is: 233,938.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,485.08 : 421,571.70 = 169,519.56 : x
  2. Step 2: Convert to fraction form
    305,485.08/421,571.70 = 169,519.56/x
  3. Step 3: Cross multiply
    305,485.08x = 421,571.70 × 169,519.56
  4. Step 4: Simplify right side
    305,485.08x = 71,464,649,092.45
  5. Step 5: Solve for x
    x = 71,464,649,092.45/305,485.08
  6. Step 6: Final answer
    x = 233,938.26

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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.