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Finding the Fourth Proportional to 449,712, 620,604.18 and 248,508

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Solution

The fourth proportional to 449,712, 620,604.18 and 248,508 is: 342,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,712 : 620,604.18 = 248,508 : x
  2. Step 2: Convert to fraction form
    449,712/620,604.18 = 248,508/x
  3. Step 3: Cross multiply
    449,712x = 620,604.18 × 248,508
  4. Step 4: Simplify right side
    449,712x = 154,225,103,563.44
  5. Step 5: Solve for x
    x = 154,225,103,563.44/449,712
  6. Step 6: Final answer
    x = 342,941.94

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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.