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Finding the Fourth Proportional to 449,699.80, 620,575.14 and 245,741.80

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Solution

The fourth proportional to 449,699.80, 620,575.14 and 245,741.80 is: 339,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,699.80 : 620,575.14 = 245,741.80 : x
  2. Step 2: Convert to fraction form
    449,699.80/620,575.14 = 245,741.80/x
  3. Step 3: Cross multiply
    449,699.80x = 620,575.14 × 245,741.80
  4. Step 4: Simplify right side
    449,699.80x = 152,501,251,938.85
  5. Step 5: Solve for x
    x = 152,501,251,938.85/449,699.80
  6. Step 6: Final answer
    x = 339,117.90

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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.