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Finding the Fourth Proportional to 449,492.22, 620,318.12 and 258,505.76

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Solution

The fourth proportional to 449,492.22, 620,318.12 and 258,505.76 is: 356,748.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,492.22 : 620,318.12 = 258,505.76 : x
  2. Step 2: Convert to fraction form
    449,492.22/620,318.12 = 258,505.76/x
  3. Step 3: Cross multiply
    449,492.22x = 620,318.12 × 258,505.76
  4. Step 4: Simplify right side
    449,492.22x = 160,355,802,658.25
  5. Step 5: Solve for x
    x = 160,355,802,658.25/449,492.22
  6. Step 6: Final answer
    x = 356,748.78

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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.