Home / 280,238.51-386,738.48-152,921.09

Finding the Fourth Proportional to 280,238.51, 386,738.48 and 152,921.09

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Solution

The fourth proportional to 280,238.51, 386,738.48 and 152,921.09 is: 211,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,238.51 : 386,738.48 = 152,921.09 : x
  2. Step 2: Convert to fraction form
    280,238.51/386,738.48 = 152,921.09/x
  3. Step 3: Cross multiply
    280,238.51x = 386,738.48 × 152,921.09
  4. Step 4: Simplify right side
    280,238.51x = 59,140,469,906.54
  5. Step 5: Solve for x
    x = 59,140,469,906.54/280,238.51
  6. Step 6: Final answer
    x = 211,036.20

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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.