Home / 305,261.17-421,232.20-169,292.61

Finding the Fourth Proportional to 305,261.17, 421,232.20 and 169,292.61

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Solution

The fourth proportional to 305,261.17, 421,232.20 and 169,292.61 is: 233,608.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,261.17 : 421,232.20 = 169,292.61 : x
  2. Step 2: Convert to fraction form
    305,261.17/421,232.20 = 169,292.61/x
  3. Step 3: Cross multiply
    305,261.17x = 421,232.20 × 169,292.61
  4. Step 4: Simplify right side
    305,261.17x = 71,311,498,130.81
  5. Step 5: Solve for x
    x = 71,311,498,130.81/305,261.17
  6. Step 6: Final answer
    x = 233,608.15

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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.