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Finding the Fourth Proportional to 225,633.82, 311,175.93 and 139,579.12

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Solution

The fourth proportional to 225,633.82, 311,175.93 and 139,579.12 is: 192,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,633.82 : 311,175.93 = 139,579.12 : x
  2. Step 2: Convert to fraction form
    225,633.82/311,175.93 = 139,579.12/x
  3. Step 3: Cross multiply
    225,633.82x = 311,175.93 × 139,579.12
  4. Step 4: Simplify right side
    225,633.82x = 43,433,663,477.02
  5. Step 5: Solve for x
    x = 43,433,663,477.02/225,633.82
  6. Step 6: Final answer
    x = 192,496.25

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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.