Home / 218,030.14-300,906.54-121,243.66

Finding the Fourth Proportional to 218,030.14, 300,906.54 and 121,243.66

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Solution

The fourth proportional to 218,030.14, 300,906.54 and 121,243.66 is: 167,330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,030.14 : 300,906.54 = 121,243.66 : x
  2. Step 2: Convert to fraction form
    218,030.14/300,906.54 = 121,243.66/x
  3. Step 3: Cross multiply
    218,030.14x = 300,906.54 × 121,243.66
  4. Step 4: Simplify right side
    218,030.14x = 36,483,010,227.54
  5. Step 5: Solve for x
    x = 36,483,010,227.54/218,030.14
  6. Step 6: Final answer
    x = 167,330.12

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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.