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Finding the Fourth Proportional to 221,832.36, 306,127.98 and 121,230.36

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Solution

The fourth proportional to 221,832.36, 306,127.98 and 121,230.36 is: 167,297.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,832.36 : 306,127.98 = 121,230.36 : x
  2. Step 2: Convert to fraction form
    221,832.36/306,127.98 = 121,230.36/x
  3. Step 3: Cross multiply
    221,832.36x = 306,127.98 × 121,230.36
  4. Step 4: Simplify right side
    221,832.36x = 37,112,005,221.47
  5. Step 5: Solve for x
    x = 37,112,005,221.47/221,832.36
  6. Step 6: Final answer
    x = 167,297.53

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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.