Home / 305,681.10-421,546.77-196,674.19

Finding the Fourth Proportional to 305,681.10, 421,546.77 and 196,674.19

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Solution

The fourth proportional to 305,681.10, 421,546.77 and 196,674.19 is: 271,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,681.10 : 421,546.77 = 196,674.19 : x
  2. Step 2: Convert to fraction form
    305,681.10/421,546.77 = 196,674.19/x
  3. Step 3: Cross multiply
    305,681.10x = 421,546.77 × 196,674.19
  4. Step 4: Simplify right side
    305,681.10x = 82,907,369,536.87
  5. Step 5: Solve for x
    x = 82,907,369,536.87/305,681.10
  6. Step 6: Final answer
    x = 271,221.77

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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.