Home / 221,861.44-306,168-121,259.36

Finding the Fourth Proportional to 221,861.44, 306,168 and 121,259.36

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Solution

The fourth proportional to 221,861.44, 306,168 and 121,259.36 is: 167,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,861.44 : 306,168 = 121,259.36 : x
  2. Step 2: Convert to fraction form
    221,861.44/306,168 = 121,259.36/x
  3. Step 3: Cross multiply
    221,861.44x = 306,168 × 121,259.36
  4. Step 4: Simplify right side
    221,861.44x = 37,125,735,732.48
  5. Step 5: Solve for x
    x = 37,125,735,732.48/221,861.44
  6. Step 6: Final answer
    x = 167,337.49

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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.