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Finding the Fourth Proportional to 259,471.58, 389,178.38 and 69,950.81

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Solution

The fourth proportional to 259,471.58, 389,178.38 and 69,950.81 is: 104,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,471.58 : 389,178.38 = 69,950.81 : x
  2. Step 2: Convert to fraction form
    259,471.58/389,178.38 = 69,950.81/x
  3. Step 3: Cross multiply
    259,471.58x = 389,178.38 × 69,950.81
  4. Step 4: Simplify right side
    259,471.58x = 27,223,340,619.84
  5. Step 5: Solve for x
    x = 27,223,340,619.84/259,471.58
  6. Step 6: Final answer
    x = 104,918.39

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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.