Home / 305,212.25-421,172.36-169,241.20

Finding the Fourth Proportional to 305,212.25, 421,172.36 and 169,241.20

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Solution

The fourth proportional to 305,212.25, 421,172.36 and 169,241.20 is: 233,541.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,212.25 : 421,172.36 = 169,241.20 : x
  2. Step 2: Convert to fraction form
    305,212.25/421,172.36 = 169,241.20/x
  3. Step 3: Cross multiply
    305,212.25x = 421,172.36 × 169,241.20
  4. Step 4: Simplify right side
    305,212.25x = 71,279,714,348.75
  5. Step 5: Solve for x
    x = 71,279,714,348.75/305,212.25
  6. Step 6: Final answer
    x = 233,541.46

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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.