Home / 331,628.48-457,183.90-280,435.84

Finding the Fourth Proportional to 331,628.48, 457,183.90 and 280,435.84

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Solution

The fourth proportional to 331,628.48, 457,183.90 and 280,435.84 is: 386,609.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,628.48 : 457,183.90 = 280,435.84 : x
  2. Step 2: Convert to fraction form
    331,628.48/457,183.90 = 280,435.84/x
  3. Step 3: Cross multiply
    331,628.48x = 457,183.90 × 280,435.84
  4. Step 4: Simplify right side
    331,628.48x = 128,210,751,030.98
  5. Step 5: Solve for x
    x = 128,210,751,030.98/331,628.48
  6. Step 6: Final answer
    x = 386,609.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.