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Finding the Fourth Proportional to 449,641.98, 620,487.42 and 245,699.90

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Solution

The fourth proportional to 449,641.98, 620,487.42 and 245,699.90 is: 339,055.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,641.98 : 620,487.42 = 245,699.90 : x
  2. Step 2: Convert to fraction form
    449,641.98/620,487.42 = 245,699.90/x
  3. Step 3: Cross multiply
    449,641.98x = 620,487.42 × 245,699.90
  4. Step 4: Simplify right side
    449,641.98x = 152,453,697,045.26
  5. Step 5: Solve for x
    x = 152,453,697,045.26/449,641.98
  6. Step 6: Final answer
    x = 339,055.75

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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.