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Finding the Fourth Proportional to 259,739.70, 389,662.20 and 147,473.70

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Solution

The fourth proportional to 259,739.70, 389,662.20 and 147,473.70 is: 221,240.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,739.70 : 389,662.20 = 147,473.70 : x
  2. Step 2: Convert to fraction form
    259,739.70/389,662.20 = 147,473.70/x
  3. Step 3: Cross multiply
    259,739.70x = 389,662.20 × 147,473.70
  4. Step 4: Simplify right side
    259,739.70x = 57,464,926,384.14
  5. Step 5: Solve for x
    x = 57,464,926,384.14/259,739.70
  6. Step 6: Final answer
    x = 221,240.44

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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.