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Finding the Fourth Proportional to 299,120.60, 448,583.84 and 99,387.36

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Solution

The fourth proportional to 299,120.60, 448,583.84 and 99,387.36 is: 149,048.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,120.60 : 448,583.84 = 99,387.36 : x
  2. Step 2: Convert to fraction form
    299,120.60/448,583.84 = 99,387.36/x
  3. Step 3: Cross multiply
    299,120.60x = 448,583.84 × 99,387.36
  4. Step 4: Simplify right side
    299,120.60x = 44,583,563,596.26
  5. Step 5: Solve for x
    x = 44,583,563,596.26/299,120.60
  6. Step 6: Final answer
    x = 149,048.79

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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.