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Finding the Fourth Proportional to 299,768.52, 449,641.98 and 75,130.68

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Solution

The fourth proportional to 299,768.52, 449,641.98 and 75,130.68 is: 112,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,768.52 : 449,641.98 = 75,130.68 : x
  2. Step 2: Convert to fraction form
    299,768.52/449,641.98 = 75,130.68/x
  3. Step 3: Cross multiply
    299,768.52x = 449,641.98 × 75,130.68
  4. Step 4: Simplify right side
    299,768.52x = 33,781,907,713.95
  5. Step 5: Solve for x
    x = 33,781,907,713.95/299,768.52
  6. Step 6: Final answer
    x = 112,693.31

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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.