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Finding the Fourth Proportional to 295,406.40, 443,109.60 and 279,076.80

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Solution

The fourth proportional to 295,406.40, 443,109.60 and 279,076.80 is: 418,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,406.40 : 443,109.60 = 279,076.80 : x
  2. Step 2: Convert to fraction form
    295,406.40/443,109.60 = 279,076.80/x
  3. Step 3: Cross multiply
    295,406.40x = 443,109.60 × 279,076.80
  4. Step 4: Simplify right side
    295,406.40x = 123,661,609,217.28
  5. Step 5: Solve for x
    x = 123,661,609,217.28/295,406.40
  6. Step 6: Final answer
    x = 418,615.20

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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.