Home / 305,342.07-421,378.82-169,371.60

Finding the Fourth Proportional to 305,342.07, 421,378.82 and 169,371.60

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Solution

The fourth proportional to 305,342.07, 421,378.82 and 169,371.60 is: 233,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,342.07 : 421,378.82 = 169,371.60 : x
  2. Step 2: Convert to fraction form
    305,342.07/421,378.82 = 169,371.60/x
  3. Step 3: Cross multiply
    305,342.07x = 421,378.82 × 169,371.60
  4. Step 4: Simplify right side
    305,342.07x = 71,369,601,995.76
  5. Step 5: Solve for x
    x = 71,369,601,995.76/305,342.07
  6. Step 6: Final answer
    x = 233,736.55

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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.