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Finding the Fourth Proportional to 449,489.45, 620,314.30 and 258,503.00

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Solution

The fourth proportional to 449,489.45, 620,314.30 and 258,503.00 is: 356,744.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,489.45 : 620,314.30 = 258,503.00 : x
  2. Step 2: Convert to fraction form
    449,489.45/620,314.30 = 258,503.00/x
  3. Step 3: Cross multiply
    449,489.45x = 620,314.30 × 258,503.00
  4. Step 4: Simplify right side
    449,489.45x = 160,353,104,714.46
  5. Step 5: Solve for x
    x = 160,353,104,714.46/449,489.45
  6. Step 6: Final answer
    x = 356,744.98

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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.