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Finding the Fourth Proportional to 325,904.40, 488,273.40 and 275,749.20

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Solution

The fourth proportional to 325,904.40, 488,273.40 and 275,749.20 is: 413,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,904.40 : 488,273.40 = 275,749.20 : x
  2. Step 2: Convert to fraction form
    325,904.40/488,273.40 = 275,749.20/x
  3. Step 3: Cross multiply
    325,904.40x = 488,273.40 × 275,749.20
  4. Step 4: Simplify right side
    325,904.40x = 134,640,999,431.28
  5. Step 5: Solve for x
    x = 134,640,999,431.28/325,904.40
  6. Step 6: Final answer
    x = 413,130.35

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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.