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Finding the Fourth Proportional to 449,285.16, 620,046.18 and 258,358.44

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Solution

The fourth proportional to 449,285.16, 620,046.18 and 258,358.44 is: 356,553.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,285.16 : 620,046.18 = 258,358.44 : x
  2. Step 2: Convert to fraction form
    449,285.16/620,046.18 = 258,358.44/x
  3. Step 3: Cross multiply
    449,285.16x = 620,046.18 × 258,358.44
  4. Step 4: Simplify right side
    449,285.16x = 160,194,163,792.76
  5. Step 5: Solve for x
    x = 160,194,163,792.76/449,285.16
  6. Step 6: Final answer
    x = 356,553.43

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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.