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Finding the Fourth Proportional to 236,081.49, 325,783.72 and 128,649.67

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Solution

The fourth proportional to 236,081.49, 325,783.72 and 128,649.67 is: 177,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,081.49 : 325,783.72 = 128,649.67 : x
  2. Step 2: Convert to fraction form
    236,081.49/325,783.72 = 128,649.67/x
  3. Step 3: Cross multiply
    236,081.49x = 325,783.72 × 128,649.67
  4. Step 4: Simplify right side
    236,081.49x = 41,911,967,415.73
  5. Step 5: Solve for x
    x = 41,911,967,415.73/236,081.49
  6. Step 6: Final answer
    x = 177,531.78

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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.