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Finding the Fourth Proportional to 259,653.54, 389,600.87 and 99,676.25

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Solution

The fourth proportional to 259,653.54, 389,600.87 and 99,676.25 is: 149,560.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,653.54 : 389,600.87 = 99,676.25 : x
  2. Step 2: Convert to fraction form
    259,653.54/389,600.87 = 99,676.25/x
  3. Step 3: Cross multiply
    259,653.54x = 389,600.87 × 99,676.25
  4. Step 4: Simplify right side
    259,653.54x = 38,833,951,271.95
  5. Step 5: Solve for x
    x = 38,833,951,271.95/259,653.54
  6. Step 6: Final answer
    x = 149,560.65

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1.5x scale

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.