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Finding the Fourth Proportional to 449,930.90, 620,972.26 and 258,907.39

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Solution

The fourth proportional to 449,930.90, 620,972.26 and 258,907.39 is: 357,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,930.90 : 620,972.26 = 258,907.39 : x
  2. Step 2: Convert to fraction form
    449,930.90/620,972.26 = 258,907.39/x
  3. Step 3: Cross multiply
    449,930.90x = 620,972.26 × 258,907.39
  4. Step 4: Simplify right side
    449,930.90x = 160,774,304,899.30
  5. Step 5: Solve for x
    x = 160,774,304,899.30/449,930.90
  6. Step 6: Final answer
    x = 357,331.10

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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.