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Finding the Fourth Proportional to 528,321.44, 792,508.08 and 212,735.72

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Solution

The fourth proportional to 528,321.44, 792,508.08 and 212,735.72 is: 319,114.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,321.44 : 792,508.08 = 212,735.72 : x
  2. Step 2: Convert to fraction form
    528,321.44/792,508.08 = 212,735.72/x
  3. Step 3: Cross multiply
    528,321.44x = 792,508.08 × 212,735.72
  4. Step 4: Simplify right side
    528,321.44x = 168,594,777,004.62
  5. Step 5: Solve for x
    x = 168,594,777,004.62/528,321.44
  6. Step 6: Final answer
    x = 319,114.02

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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.