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Finding the Fourth Proportional to 325,750.80, 488,496.60 and 115,280.40

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Solution

The fourth proportional to 325,750.80, 488,496.60 and 115,280.40 is: 172,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,750.80 : 488,496.60 = 115,280.40 : x
  2. Step 2: Convert to fraction form
    325,750.80/488,496.60 = 115,280.40/x
  3. Step 3: Cross multiply
    325,750.80x = 488,496.60 × 115,280.40
  4. Step 4: Simplify right side
    325,750.80x = 56,314,083,446.64
  5. Step 5: Solve for x
    x = 56,314,083,446.64/325,750.80
  6. Step 6: Final answer
    x = 172,874.74

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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.