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Finding the Fourth Proportional to 298,670.40, 448,005.60 and 275,860.80

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Solution

The fourth proportional to 298,670.40, 448,005.60 and 275,860.80 is: 413,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,670.40 : 448,005.60 = 275,860.80 : x
  2. Step 2: Convert to fraction form
    298,670.40/448,005.60 = 275,860.80/x
  3. Step 3: Cross multiply
    298,670.40x = 448,005.60 × 275,860.80
  4. Step 4: Simplify right side
    298,670.40x = 123,587,183,220.48
  5. Step 5: Solve for x
    x = 123,587,183,220.48/298,670.40
  6. Step 6: Final answer
    x = 413,791.20

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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.