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Finding the Fourth Proportional to 259,739.01, 389,647.46 and 91,229.63

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Solution

The fourth proportional to 259,739.01, 389,647.46 and 91,229.63 is: 136,858.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,739.01 : 389,647.46 = 91,229.63 : x
  2. Step 2: Convert to fraction form
    259,739.01/389,647.46 = 91,229.63/x
  3. Step 3: Cross multiply
    259,739.01x = 389,647.46 × 91,229.63
  4. Step 4: Simplify right side
    259,739.01x = 35,547,391,886.08
  5. Step 5: Solve for x
    x = 35,547,391,886.08/259,739.01
  6. Step 6: Final answer
    x = 136,858.12

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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.