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Finding the Fourth Proportional to 445,638.51, 668,882.21 and 276,647.40

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Solution

The fourth proportional to 445,638.51, 668,882.21 and 276,647.40 is: 415,234.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,638.51 : 668,882.21 = 276,647.40 : x
  2. Step 2: Convert to fraction form
    445,638.51/668,882.21 = 276,647.40/x
  3. Step 3: Cross multiply
    445,638.51x = 668,882.21 × 276,647.40
  4. Step 4: Simplify right side
    445,638.51x = 185,044,522,919.52
  5. Step 5: Solve for x
    x = 185,044,522,919.52/445,638.51
  6. Step 6: Final answer
    x = 415,234.59

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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.