Home / 221,824.48-306,118.56-121,224.64

Finding the Fourth Proportional to 221,824.48, 306,118.56 and 121,224.64

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Solution

The fourth proportional to 221,824.48, 306,118.56 and 121,224.64 is: 167,290.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,824.48 : 306,118.56 = 121,224.64 : x
  2. Step 2: Convert to fraction form
    221,824.48/306,118.56 = 121,224.64/x
  3. Step 3: Cross multiply
    221,824.48x = 306,118.56 × 121,224.64
  4. Step 4: Simplify right side
    221,824.48x = 37,109,112,233.32
  5. Step 5: Solve for x
    x = 37,109,112,233.32/221,824.48
  6. Step 6: Final answer
    x = 167,290.43

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1.5x scale

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.