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Finding the Fourth Proportional to 302,080.56, 453,091.56 and 91,720.32

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Solution

The fourth proportional to 302,080.56, 453,091.56 and 91,720.32 is: 137,571.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,080.56 : 453,091.56 = 91,720.32 : x
  2. Step 2: Convert to fraction form
    302,080.56/453,091.56 = 91,720.32/x
  3. Step 3: Cross multiply
    302,080.56x = 453,091.56 × 91,720.32
  4. Step 4: Simplify right side
    302,080.56x = 41,557,702,872.50
  5. Step 5: Solve for x
    x = 41,557,702,872.50/302,080.56
  6. Step 6: Final answer
    x = 137,571.59

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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.