Home / 280,764.11-421,343.00-162,272.45

Finding the Fourth Proportional to 280,764.11, 421,343.00 and 162,272.45

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Solution

The fourth proportional to 280,764.11, 421,343.00 and 162,272.45 is: 243,522.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,764.11 : 421,343.00 = 162,272.45 : x
  2. Step 2: Convert to fraction form
    280,764.11/421,343.00 = 162,272.45/x
  3. Step 3: Cross multiply
    280,764.11x = 421,343.00 × 162,272.45
  4. Step 4: Simplify right side
    280,764.11x = 68,372,357,982.27
  5. Step 5: Solve for x
    x = 68,372,357,982.27/280,764.11
  6. Step 6: Final answer
    x = 243,522.43

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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.