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Finding the Fourth Proportional to 248,302.50, 372,512.07 and 82,090.50

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Solution

The fourth proportional to 248,302.50, 372,512.07 and 82,090.50 is: 123,155.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,302.50 : 372,512.07 = 82,090.50 : x
  2. Step 2: Convert to fraction form
    248,302.50/372,512.07 = 82,090.50/x
  3. Step 3: Cross multiply
    248,302.50x = 372,512.07 × 82,090.50
  4. Step 4: Simplify right side
    248,302.50x = 30,579,702,082.34
  5. Step 5: Solve for x
    x = 30,579,702,082.34/248,302.50
  6. Step 6: Final answer
    x = 123,155.03

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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.