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Finding the Fourth Proportional to 449,497.72, 620,325.70 and 258,511.26

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Solution

The fourth proportional to 449,497.72, 620,325.70 and 258,511.26 is: 356,756.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,497.72 : 620,325.70 = 258,511.26 : x
  2. Step 2: Convert to fraction form
    449,497.72/620,325.70 = 258,511.26/x
  3. Step 3: Cross multiply
    449,497.72x = 620,325.70 × 258,511.26
  4. Step 4: Simplify right side
    449,497.72x = 160,361,178,317.38
  5. Step 5: Solve for x
    x = 160,361,178,317.38/449,497.72
  6. Step 6: Final answer
    x = 356,756.38

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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.