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Finding the Fourth Proportional to 449,490.45, 620,315.68 and 258,504

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Solution

The fourth proportional to 449,490.45, 620,315.68 and 258,504 is: 356,746.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,490.45 : 620,315.68 = 258,504 : x
  2. Step 2: Convert to fraction form
    449,490.45/620,315.68 = 258,504/x
  3. Step 3: Cross multiply
    449,490.45x = 620,315.68 × 258,504
  4. Step 4: Simplify right side
    449,490.45x = 160,354,084,542.72
  5. Step 5: Solve for x
    x = 160,354,084,542.72/449,490.45
  6. Step 6: Final answer
    x = 356,746.37

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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.