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Finding the Fourth Proportional to 299,612.76, 449,420.37 and 74,972.58

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Solution

The fourth proportional to 299,612.76, 449,420.37 and 74,972.58 is: 112,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,612.76 : 449,420.37 = 74,972.58 : x
  2. Step 2: Convert to fraction form
    299,612.76/449,420.37 = 74,972.58/x
  3. Step 3: Cross multiply
    299,612.76x = 449,420.37 × 74,972.58
  4. Step 4: Simplify right side
    299,612.76x = 33,694,204,643.45
  5. Step 5: Solve for x
    x = 33,694,204,643.45/299,612.76
  6. Step 6: Final answer
    x = 112,459.18

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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.