Home / 358,014.31-493,936.79-221,999.31

Finding the Fourth Proportional to 358,014.31, 493,936.79 and 221,999.31

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Solution

The fourth proportional to 358,014.31, 493,936.79 and 221,999.31 is: 306,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,014.31 : 493,936.79 = 221,999.31 : x
  2. Step 2: Convert to fraction form
    358,014.31/493,936.79 = 221,999.31/x
  3. Step 3: Cross multiply
    358,014.31x = 493,936.79 × 221,999.31
  4. Step 4: Simplify right side
    358,014.31x = 109,653,625,453.62
  5. Step 5: Solve for x
    x = 109,653,625,453.62/358,014.31
  6. Step 6: Final answer
    x = 306,282.80

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1.5x scale

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.