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Finding the Fourth Proportional to 449,486.88, 620,291.89 and 258,496.17

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Solution

The fourth proportional to 449,486.88, 620,291.89 and 258,496.17 is: 356,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,486.88 : 620,291.89 = 258,496.17 : x
  2. Step 2: Convert to fraction form
    449,486.88/620,291.89 = 258,496.17/x
  3. Step 3: Cross multiply
    449,486.88x = 620,291.89 × 258,496.17
  4. Step 4: Simplify right side
    449,486.88x = 160,343,077,847.06
  5. Step 5: Solve for x
    x = 160,343,077,847.06/449,486.88
  6. Step 6: Final answer
    x = 356,724.71

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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.