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Finding the Fourth Proportional to 299,388.98, 449,032.44 and 99,686.72

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Solution

The fourth proportional to 299,388.98, 449,032.44 and 99,686.72 is: 149,513.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,388.98 : 449,032.44 = 99,686.72 : x
  2. Step 2: Convert to fraction form
    299,388.98/449,032.44 = 99,686.72/x
  3. Step 3: Cross multiply
    299,388.98x = 449,032.44 × 99,686.72
  4. Step 4: Simplify right side
    299,388.98x = 44,762,571,117.20
  5. Step 5: Solve for x
    x = 44,762,571,117.20/299,388.98
  6. Step 6: Final answer
    x = 149,513.09

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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.