Home / 305,238.20-421,255.36-177,911.08

Finding the Fourth Proportional to 305,238.20, 421,255.36 and 177,911.08

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Solution

The fourth proportional to 305,238.20, 421,255.36 and 177,911.08 is: 245,532.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,238.20 : 421,255.36 = 177,911.08 : x
  2. Step 2: Convert to fraction form
    305,238.20/421,255.36 = 177,911.08/x
  3. Step 3: Cross multiply
    305,238.20x = 421,255.36 × 177,911.08
  4. Step 4: Simplify right side
    305,238.20x = 74,945,996,053.39
  5. Step 5: Solve for x
    x = 74,945,996,053.39/305,238.20
  6. Step 6: Final answer
    x = 245,532.82

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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.