Home / 305,229.79-421,131.04-240,498.33

Finding the Fourth Proportional to 305,229.79, 421,131.04 and 240,498.33

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Solution

The fourth proportional to 305,229.79, 421,131.04 and 240,498.33 is: 331,819.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,229.79 : 421,131.04 = 240,498.33 : x
  2. Step 2: Convert to fraction form
    305,229.79/421,131.04 = 240,498.33/x
  3. Step 3: Cross multiply
    305,229.79x = 421,131.04 × 240,498.33
  4. Step 4: Simplify right side
    305,229.79x = 101,281,311,831.16
  5. Step 5: Solve for x
    x = 101,281,311,831.16/305,229.79
  6. Step 6: Final answer
    x = 331,819.88

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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.