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Finding the Fourth Proportional to 449,501.89, 620,331.49 and 258,515.46

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Solution

The fourth proportional to 449,501.89, 620,331.49 and 258,515.46 is: 356,762.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,501.89 : 620,331.49 = 258,515.46 : x
  2. Step 2: Convert to fraction form
    449,501.89/620,331.49 = 258,515.46/x
  3. Step 3: Cross multiply
    449,501.89x = 620,331.49 × 258,515.46
  4. Step 4: Simplify right side
    449,501.89x = 160,365,280,489.84
  5. Step 5: Solve for x
    x = 160,365,280,489.84/449,501.89
  6. Step 6: Final answer
    x = 356,762.19

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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.