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Finding the Fourth Proportional to 323,659.08, 446,840.88 and 287,749.72

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Solution

The fourth proportional to 323,659.08, 446,840.88 and 287,749.72 is: 397,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,659.08 : 446,840.88 = 287,749.72 : x
  2. Step 2: Convert to fraction form
    323,659.08/446,840.88 = 287,749.72/x
  3. Step 3: Cross multiply
    323,659.08x = 446,840.88 × 287,749.72
  4. Step 4: Simplify right side
    323,659.08x = 128,578,338,104.55
  5. Step 5: Solve for x
    x = 128,578,338,104.55/323,659.08
  6. Step 6: Final answer
    x = 397,264.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.