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Finding the Fourth Proportional to 272,360.89, 408,606.96 and 85,372.39

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Solution

The fourth proportional to 272,360.89, 408,606.96 and 85,372.39 is: 128,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,360.89 : 408,606.96 = 85,372.39 : x
  2. Step 2: Convert to fraction form
    272,360.89/408,606.96 = 85,372.39/x
  3. Step 3: Cross multiply
    272,360.89x = 408,606.96 × 85,372.39
  4. Step 4: Simplify right side
    272,360.89x = 34,883,752,745.83
  5. Step 5: Solve for x
    x = 34,883,752,745.83/272,360.89
  6. Step 6: Final answer
    x = 128,079.16

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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.