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Finding the Fourth Proportional to 325,783.20, 488,723.40 and 115,404.60

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Solution

The fourth proportional to 325,783.20, 488,723.40 and 115,404.60 is: 173,124.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,783.20 : 488,723.40 = 115,404.60 : x
  2. Step 2: Convert to fraction form
    325,783.20/488,723.40 = 115,404.60/x
  3. Step 3: Cross multiply
    325,783.20x = 488,723.40 × 115,404.60
  4. Step 4: Simplify right side
    325,783.20x = 56,400,928,487.64
  5. Step 5: Solve for x
    x = 56,400,928,487.64/325,783.20
  6. Step 6: Final answer
    x = 173,124.12

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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.