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Finding the Fourth Proportional to 449,902.72, 620,846.40 and 245,949.76

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Solution

The fourth proportional to 449,902.72, 620,846.40 and 245,949.76 is: 339,400.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,902.72 : 620,846.40 = 245,949.76 : x
  2. Step 2: Convert to fraction form
    449,902.72/620,846.40 = 245,949.76/x
  3. Step 3: Cross multiply
    449,902.72x = 620,846.40 × 245,949.76
  4. Step 4: Simplify right side
    449,902.72x = 152,697,023,076.86
  5. Step 5: Solve for x
    x = 152,697,023,076.86/449,902.72
  6. Step 6: Final answer
    x = 339,400.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.