Home / 280,448.45-420,673.35-111,982.49

Finding the Fourth Proportional to 280,448.45, 420,673.35 and 111,982.49

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Solution

The fourth proportional to 280,448.45, 420,673.35 and 111,982.49 is: 167,974.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,448.45 : 420,673.35 = 111,982.49 : x
  2. Step 2: Convert to fraction form
    280,448.45/420,673.35 = 111,982.49/x
  3. Step 3: Cross multiply
    280,448.45x = 420,673.35 × 111,982.49
  4. Step 4: Simplify right side
    280,448.45x = 47,108,047,106.27
  5. Step 5: Solve for x
    x = 47,108,047,106.27/280,448.45
  6. Step 6: Final answer
    x = 167,974.00

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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.