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Finding the Fourth Proportional to 318,052.80, 477,079.20 and 274,750.20

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Solution

The fourth proportional to 318,052.80, 477,079.20 and 274,750.20 is: 412,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,052.80 : 477,079.20 = 274,750.20 : x
  2. Step 2: Convert to fraction form
    318,052.80/477,079.20 = 274,750.20/x
  3. Step 3: Cross multiply
    318,052.80x = 477,079.20 × 274,750.20
  4. Step 4: Simplify right side
    318,052.80x = 131,077,605,615.84
  5. Step 5: Solve for x
    x = 131,077,605,615.84/318,052.80
  6. Step 6: Final answer
    x = 412,125.30

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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.