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Finding the Fourth Proportional to 325,820.40, 488,730.60 and 115,479.60

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Solution

The fourth proportional to 325,820.40, 488,730.60 and 115,479.60 is: 173,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,820.40 : 488,730.60 = 115,479.60 : x
  2. Step 2: Convert to fraction form
    325,820.40/488,730.60 = 115,479.60/x
  3. Step 3: Cross multiply
    325,820.40x = 488,730.60 × 115,479.60
  4. Step 4: Simplify right side
    325,820.40x = 56,438,414,195.76
  5. Step 5: Solve for x
    x = 56,438,414,195.76/325,820.40
  6. Step 6: Final answer
    x = 173,219.40

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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.