Home / 279,111.10-418,537.05-121,258.30

Finding the Fourth Proportional to 279,111.10, 418,537.05 and 121,258.30

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Solution

The fourth proportional to 279,111.10, 418,537.05 and 121,258.30 is: 181,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,111.10 : 418,537.05 = 121,258.30 : x
  2. Step 2: Convert to fraction form
    279,111.10/418,537.05 = 121,258.30/x
  3. Step 3: Cross multiply
    279,111.10x = 418,537.05 × 121,258.30
  4. Step 4: Simplify right side
    279,111.10x = 50,751,091,170.02
  5. Step 5: Solve for x
    x = 50,751,091,170.02/279,111.10
  6. Step 6: Final answer
    x = 181,831.15

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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.