Home / 305,299.18-421,037.06-190,588.47

Finding the Fourth Proportional to 305,299.18, 421,037.06 and 190,588.47

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Solution

The fourth proportional to 305,299.18, 421,037.06 and 190,588.47 is: 262,839.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,299.18 : 421,037.06 = 190,588.47 : x
  2. Step 2: Convert to fraction form
    305,299.18/421,037.06 = 190,588.47/x
  3. Step 3: Cross multiply
    305,299.18x = 421,037.06 × 190,588.47
  4. Step 4: Simplify right side
    305,299.18x = 80,244,809,078.70
  5. Step 5: Solve for x
    x = 80,244,809,078.70/305,299.18
  6. Step 6: Final answer
    x = 262,839.91

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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.