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Finding the Fourth Proportional to 299,111.20, 448,010.70 and 259,745.20

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Solution

The fourth proportional to 299,111.20, 448,010.70 and 259,745.20 is: 389,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,111.20 : 448,010.70 = 259,745.20 : x
  2. Step 2: Convert to fraction form
    299,111.20/448,010.70 = 259,745.20/x
  3. Step 3: Cross multiply
    299,111.20x = 448,010.70 × 259,745.20
  4. Step 4: Simplify right side
    299,111.20x = 116,368,628,873.64
  5. Step 5: Solve for x
    x = 116,368,628,873.64/299,111.20
  6. Step 6: Final answer
    x = 389,048.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.