Home / 305,261.48-421,286.72-169,339.22

Finding the Fourth Proportional to 305,261.48, 421,286.72 and 169,339.22

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Solution

The fourth proportional to 305,261.48, 421,286.72 and 169,339.22 is: 233,702.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,261.48 : 421,286.72 = 169,339.22 : x
  2. Step 2: Convert to fraction form
    305,261.48/421,286.72 = 169,339.22/x
  3. Step 3: Cross multiply
    305,261.48x = 421,286.72 × 169,339.22
  4. Step 4: Simplify right side
    305,261.48x = 71,340,361,608.03
  5. Step 5: Solve for x
    x = 71,340,361,608.03/305,261.48
  6. Step 6: Final answer
    x = 233,702.47

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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.