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Finding the Fourth Proportional to 259,993.60, 389,212.80 and 154,758.40

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Solution

The fourth proportional to 259,993.60, 389,212.80 and 154,758.40 is: 231,674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,993.60 : 389,212.80 = 154,758.40 : x
  2. Step 2: Convert to fraction form
    259,993.60/389,212.80 = 154,758.40/x
  3. Step 3: Cross multiply
    259,993.60x = 389,212.80 × 154,758.40
  4. Step 4: Simplify right side
    259,993.60x = 60,233,950,187.52
  5. Step 5: Solve for x
    x = 60,233,950,187.52/259,993.60
  6. Step 6: Final answer
    x = 231,674.74

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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.