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Finding the Fourth Proportional to 325,440.60, 488,115.90 and 100,955.40

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Solution

The fourth proportional to 325,440.60, 488,115.90 and 100,955.40 is: 151,419.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,440.60 : 488,115.90 = 100,955.40 : x
  2. Step 2: Convert to fraction form
    325,440.60/488,115.90 = 100,955.40/x
  3. Step 3: Cross multiply
    325,440.60x = 488,115.90 × 100,955.40
  4. Step 4: Simplify right side
    325,440.60x = 49,277,935,930.86
  5. Step 5: Solve for x
    x = 49,277,935,930.86/325,440.60
  6. Step 6: Final answer
    x = 151,419.14

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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.