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Finding the Fourth Proportional to 449,705.91, 620,602.29 and 245,765.46

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Solution

The fourth proportional to 449,705.91, 620,602.29 and 245,765.46 is: 339,160.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,705.91 : 620,602.29 = 245,765.46 : x
  2. Step 2: Convert to fraction form
    449,705.91/620,602.29 = 245,765.46/x
  3. Step 3: Cross multiply
    449,705.91x = 620,602.29 × 245,765.46
  4. Step 4: Simplify right side
    449,705.91x = 152,522,607,278.90
  5. Step 5: Solve for x
    x = 152,522,607,278.90/449,705.91
  6. Step 6: Final answer
    x = 339,160.78

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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.