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Finding the Fourth Proportional to 218,523.63, 301,558.08 and 121,727.37

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Solution

The fourth proportional to 218,523.63, 301,558.08 and 121,727.37 is: 167,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,523.63 : 301,558.08 = 121,727.37 : x
  2. Step 2: Convert to fraction form
    218,523.63/301,558.08 = 121,727.37/x
  3. Step 3: Cross multiply
    218,523.63x = 301,558.08 × 121,727.37
  4. Step 4: Simplify right side
    218,523.63x = 36,707,871,980.65
  5. Step 5: Solve for x
    x = 36,707,871,980.65/218,523.63
  6. Step 6: Final answer
    x = 167,981.25

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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.