Home / 223,261.57-308,103.11-121,287.81

Finding the Fourth Proportional to 223,261.57, 308,103.11 and 121,287.81

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Solution

The fourth proportional to 223,261.57, 308,103.11 and 121,287.81 is: 167,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,261.57 : 308,103.11 = 121,287.81 : x
  2. Step 2: Convert to fraction form
    223,261.57/308,103.11 = 121,287.81/x
  3. Step 3: Cross multiply
    223,261.57x = 308,103.11 × 121,287.81
  4. Step 4: Simplify right side
    223,261.57x = 37,369,149,870.25
  5. Step 5: Solve for x
    x = 37,369,149,870.25/223,261.57
  6. Step 6: Final answer
    x = 167,378.33

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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.