Home / 305,131.94-421,107.04-169,208.52

Finding the Fourth Proportional to 305,131.94, 421,107.04 and 169,208.52

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Solution

The fourth proportional to 305,131.94, 421,107.04 and 169,208.52 is: 233,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,131.94 : 421,107.04 = 169,208.52 : x
  2. Step 2: Convert to fraction form
    305,131.94/421,107.04 = 169,208.52/x
  3. Step 3: Cross multiply
    305,131.94x = 421,107.04 × 169,208.52
  4. Step 4: Simplify right side
    305,131.94x = 71,254,898,999.98
  5. Step 5: Solve for x
    x = 71,254,898,999.98/305,131.94
  6. Step 6: Final answer
    x = 233,521.60

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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.