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Finding the Fourth Proportional to 235,676.51, 325,176.87 and 138,884.32

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Solution

The fourth proportional to 235,676.51, 325,176.87 and 138,884.32 is: 191,626.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,676.51 : 325,176.87 = 138,884.32 : x
  2. Step 2: Convert to fraction form
    235,676.51/325,176.87 = 138,884.32/x
  3. Step 3: Cross multiply
    235,676.51x = 325,176.87 × 138,884.32
  4. Step 4: Simplify right side
    235,676.51x = 45,161,968,469.68
  5. Step 5: Solve for x
    x = 45,161,968,469.68/235,676.51
  6. Step 6: Final answer
    x = 191,626.94

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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.