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Finding the Fourth Proportional to 299,406.80, 449,117.40 and 89,051.60

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Solution

The fourth proportional to 299,406.80, 449,117.40 and 89,051.60 is: 133,579.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,406.80 : 449,117.40 = 89,051.60 : x
  2. Step 2: Convert to fraction form
    299,406.80/449,117.40 = 89,051.60/x
  3. Step 3: Cross multiply
    299,406.80x = 449,117.40 × 89,051.60
  4. Step 4: Simplify right side
    299,406.80x = 39,994,623,057.84
  5. Step 5: Solve for x
    x = 39,994,623,057.84/299,406.80
  6. Step 6: Final answer
    x = 133,579.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.