Home / 223,489.29-308,416.47-121,515.75

Finding the Fourth Proportional to 223,489.29, 308,416.47 and 121,515.75

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Solution

The fourth proportional to 223,489.29, 308,416.47 and 121,515.75 is: 167,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,489.29 : 308,416.47 = 121,515.75 : x
  2. Step 2: Convert to fraction form
    223,489.29/308,416.47 = 121,515.75/x
  3. Step 3: Cross multiply
    223,489.29x = 308,416.47 × 121,515.75
  4. Step 4: Simplify right side
    223,489.29x = 37,477,458,664.40
  5. Step 5: Solve for x
    x = 37,477,458,664.40/223,489.29
  6. Step 6: Final answer
    x = 167,692.41

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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.