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Finding the Fourth Proportional to 325,771.80, 488,301.30 and 115,301.40

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Solution

The fourth proportional to 325,771.80, 488,301.30 and 115,301.40 is: 172,825.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,771.80 : 488,301.30 = 115,301.40 : x
  2. Step 2: Convert to fraction form
    325,771.80/488,301.30 = 115,301.40/x
  3. Step 3: Cross multiply
    325,771.80x = 488,301.30 × 115,301.40
  4. Step 4: Simplify right side
    325,771.80x = 56,301,823,511.82
  5. Step 5: Solve for x
    x = 56,301,823,511.82/325,771.80
  6. Step 6: Final answer
    x = 172,825.96

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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.