Home / 298,828.80-447,638.40-186,163.20

Finding the Fourth Proportional to 298,828.80, 447,638.40 and 186,163.20

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Solution

The fourth proportional to 298,828.80, 447,638.40 and 186,163.20 is: 278,868.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,828.80 : 447,638.40 = 186,163.20 : x
  2. Step 2: Convert to fraction form
    298,828.80/447,638.40 = 186,163.20/x
  3. Step 3: Cross multiply
    298,828.80x = 447,638.40 × 186,163.20
  4. Step 4: Simplify right side
    298,828.80x = 83,333,796,986.88
  5. Step 5: Solve for x
    x = 83,333,796,986.88/298,828.80
  6. Step 6: Final answer
    x = 278,868.02

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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.