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Finding the Fourth Proportional to 218,233.51, 301,138.77 and 122,719.93

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Solution

The fourth proportional to 218,233.51, 301,138.77 and 122,719.93 is: 169,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,233.51 : 301,138.77 = 122,719.93 : x
  2. Step 2: Convert to fraction form
    218,233.51/301,138.77 = 122,719.93/x
  3. Step 3: Cross multiply
    218,233.51x = 301,138.77 × 122,719.93
  4. Step 4: Simplify right side
    218,233.51x = 36,955,728,774.69
  5. Step 5: Solve for x
    x = 36,955,728,774.69/218,233.51
  6. Step 6: Final answer
    x = 169,340.30

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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.