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Finding the Fourth Proportional to 325,388.10, 488,037.15 and 100,902.90

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Solution

The fourth proportional to 325,388.10, 488,037.15 and 100,902.90 is: 151,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,388.10 : 488,037.15 = 100,902.90 : x
  2. Step 2: Convert to fraction form
    325,388.10/488,037.15 = 100,902.90/x
  3. Step 3: Cross multiply
    325,388.10x = 488,037.15 × 100,902.90
  4. Step 4: Simplify right side
    325,388.10x = 49,244,363,742.74
  5. Step 5: Solve for x
    x = 49,244,363,742.74/325,388.10
  6. Step 6: Final answer
    x = 151,340.40

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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.