Home / 307,761.40-461,933.70-263,438.20

Finding the Fourth Proportional to 307,761.40, 461,933.70 and 263,438.20

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Solution

The fourth proportional to 307,761.40, 461,933.70 and 263,438.20 is: 395,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,761.40 : 461,933.70 = 263,438.20 : x
  2. Step 2: Convert to fraction form
    307,761.40/461,933.70 = 263,438.20/x
  3. Step 3: Cross multiply
    307,761.40x = 461,933.70 × 263,438.20
  4. Step 4: Simplify right side
    307,761.40x = 121,690,982,447.34
  5. Step 5: Solve for x
    x = 121,690,982,447.34/307,761.40
  6. Step 6: Final answer
    x = 395,406.90

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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.