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Finding the Fourth Proportional to 325,937.90, 488,906.85 and 89,280.20

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Solution

The fourth proportional to 325,937.90, 488,906.85 and 89,280.20 is: 133,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,937.90 : 488,906.85 = 89,280.20 : x
  2. Step 2: Convert to fraction form
    325,937.90/488,906.85 = 89,280.20/x
  3. Step 3: Cross multiply
    325,937.90x = 488,906.85 × 89,280.20
  4. Step 4: Simplify right side
    325,937.90x = 43,649,701,349.37
  5. Step 5: Solve for x
    x = 43,649,701,349.37/325,937.90
  6. Step 6: Final answer
    x = 133,920.30

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1.5x scale

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.