Home / 259,492.28-389,236.05-81,999.27

Finding the Fourth Proportional to 259,492.28, 389,236.05 and 81,999.27

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Solution

The fourth proportional to 259,492.28, 389,236.05 and 81,999.27 is: 122,998.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,492.28 : 389,236.05 = 81,999.27 : x
  2. Step 2: Convert to fraction form
    259,492.28/389,236.05 = 81,999.27/x
  3. Step 3: Cross multiply
    259,492.28x = 389,236.05 × 81,999.27
  4. Step 4: Simplify right side
    259,492.28x = 31,917,071,957.68
  5. Step 5: Solve for x
    x = 31,917,071,957.68/259,492.28
  6. Step 6: Final answer
    x = 122,998.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.