Home / 305,534.16-421,727.04-198,110.88

Finding the Fourth Proportional to 305,534.16, 421,727.04 and 198,110.88

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Solution

The fourth proportional to 305,534.16, 421,727.04 and 198,110.88 is: 273,451.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,534.16 : 421,727.04 = 198,110.88 : x
  2. Step 2: Convert to fraction form
    305,534.16/421,727.04 = 198,110.88/x
  3. Step 3: Cross multiply
    305,534.16x = 421,727.04 × 198,110.88
  4. Step 4: Simplify right side
    305,534.16x = 83,548,715,014.20
  5. Step 5: Solve for x
    x = 83,548,715,014.20/305,534.16
  6. Step 6: Final answer
    x = 273,451.31

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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.