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Finding the Fourth Proportional to 207,494.80, 286,331.16 and 122,619.76

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Solution

The fourth proportional to 207,494.80, 286,331.16 and 122,619.76 is: 169,208.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,494.80 : 286,331.16 = 122,619.76 : x
  2. Step 2: Convert to fraction form
    207,494.80/286,331.16 = 122,619.76/x
  3. Step 3: Cross multiply
    207,494.80x = 286,331.16 × 122,619.76
  4. Step 4: Simplify right side
    207,494.80x = 35,109,858,119.72
  5. Step 5: Solve for x
    x = 35,109,858,119.72/207,494.80
  6. Step 6: Final answer
    x = 169,208.38

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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.