Home / 214,395.36-321,164.24-128,959.05

Finding the Fourth Proportional to 214,395.36, 321,164.24 and 128,959.05

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Solution

The fourth proportional to 214,395.36, 321,164.24 and 128,959.05 is: 193,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,395.36 : 321,164.24 = 128,959.05 : x
  2. Step 2: Convert to fraction form
    214,395.36/321,164.24 = 128,959.05/x
  3. Step 3: Cross multiply
    214,395.36x = 321,164.24 × 128,959.05
  4. Step 4: Simplify right side
    214,395.36x = 41,417,033,859.51
  5. Step 5: Solve for x
    x = 41,417,033,859.51/214,395.36
  6. Step 6: Final answer
    x = 193,180.64

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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.