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Finding the Fourth Proportional to 449,691.44, 620,557.80 and 258,734.48

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Solution

The fourth proportional to 449,691.44, 620,557.80 and 258,734.48 is: 357,044.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,691.44 : 620,557.80 = 258,734.48 : x
  2. Step 2: Convert to fraction form
    449,691.44/620,557.80 = 258,734.48/x
  3. Step 3: Cross multiply
    449,691.44x = 620,557.80 × 258,734.48
  4. Step 4: Simplify right side
    449,691.44x = 160,559,699,692.94
  5. Step 5: Solve for x
    x = 160,559,699,692.94/449,691.44
  6. Step 6: Final answer
    x = 357,044.15

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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.