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Finding the Fourth Proportional to 299,748.52, 449,642.22 and 89,407.72

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Solution

The fourth proportional to 299,748.52, 449,642.22 and 89,407.72 is: 134,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,748.52 : 449,642.22 = 89,407.72 : x
  2. Step 2: Convert to fraction form
    299,748.52/449,642.22 = 89,407.72/x
  3. Step 3: Cross multiply
    299,748.52x = 449,642.22 × 89,407.72
  4. Step 4: Simplify right side
    299,748.52x = 40,201,485,705.94
  5. Step 5: Solve for x
    x = 40,201,485,705.94/299,748.52
  6. Step 6: Final answer
    x = 134,117.38

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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.