Home / 305,383.23-421,152.75-190,672.23

Finding the Fourth Proportional to 305,383.23, 421,152.75 and 190,672.23

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Solution

The fourth proportional to 305,383.23, 421,152.75 and 190,672.23 is: 262,955.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,383.23 : 421,152.75 = 190,672.23 : x
  2. Step 2: Convert to fraction form
    305,383.23/421,152.75 = 190,672.23/x
  3. Step 3: Cross multiply
    305,383.23x = 421,152.75 × 190,672.23
  4. Step 4: Simplify right side
    305,383.23x = 80,302,134,013.13
  5. Step 5: Solve for x
    x = 80,302,134,013.13/305,383.23
  6. Step 6: Final answer
    x = 262,955.28

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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.