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Finding the Fourth Proportional to 225,313.26, 310,936.77 and 139,284.78

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Solution

The fourth proportional to 225,313.26, 310,936.77 and 139,284.78 is: 192,215.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,313.26 : 310,936.77 = 139,284.78 : x
  2. Step 2: Convert to fraction form
    225,313.26/310,936.77 = 139,284.78/x
  3. Step 3: Cross multiply
    225,313.26x = 310,936.77 × 139,284.78
  4. Step 4: Simplify right side
    225,313.26x = 43,308,759,603.36
  5. Step 5: Solve for x
    x = 43,308,759,603.36/225,313.26
  6. Step 6: Final answer
    x = 192,215.76

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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.