Home / 236,249.19-326,016.78-128,821.32

Finding the Fourth Proportional to 236,249.19, 326,016.78 and 128,821.32

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Solution

The fourth proportional to 236,249.19, 326,016.78 and 128,821.32 is: 177,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,249.19 : 326,016.78 = 128,821.32 : x
  2. Step 2: Convert to fraction form
    236,249.19/326,016.78 = 128,821.32/x
  3. Step 3: Cross multiply
    236,249.19x = 326,016.78 × 128,821.32
  4. Step 4: Simplify right side
    236,249.19x = 41,997,911,941.75
  5. Step 5: Solve for x
    x = 41,997,911,941.75/236,249.19
  6. Step 6: Final answer
    x = 177,769.55

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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.