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Finding the Fourth Proportional to 449,580.73, 620,403.06 and 245,638.72

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Solution

The fourth proportional to 449,580.73, 620,403.06 and 245,638.72 is: 338,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,580.73 : 620,403.06 = 245,638.72 : x
  2. Step 2: Convert to fraction form
    449,580.73/620,403.06 = 245,638.72/x
  3. Step 3: Cross multiply
    449,580.73x = 620,403.06 × 245,638.72
  4. Step 4: Simplify right side
    449,580.73x = 152,395,013,542.48
  5. Step 5: Solve for x
    x = 152,395,013,542.48/449,580.73
  6. Step 6: Final answer
    x = 338,971.41

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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.