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Finding the Fourth Proportional to 449,596.86, 620,436.33 and 245,643.39

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Solution

The fourth proportional to 449,596.86, 620,436.33 and 245,643.39 is: 338,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,596.86 : 620,436.33 = 245,643.39 : x
  2. Step 2: Convert to fraction form
    449,596.86/620,436.33 = 245,643.39/x
  3. Step 3: Cross multiply
    449,596.86x = 620,436.33 × 245,643.39
  4. Step 4: Simplify right side
    449,596.86x = 152,406,083,380.36
  5. Step 5: Solve for x
    x = 152,406,083,380.36/449,596.86
  6. Step 6: Final answer
    x = 338,983.87

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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.