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Finding the Fourth Proportional to 325,964.60, 488,946.90 and 315,078.20

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Solution

The fourth proportional to 325,964.60, 488,946.90 and 315,078.20 is: 472,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,964.60 : 488,946.90 = 315,078.20 : x
  2. Step 2: Convert to fraction form
    325,964.60/488,946.90 = 315,078.20/x
  3. Step 3: Cross multiply
    325,964.60x = 488,946.90 × 315,078.20
  4. Step 4: Simplify right side
    325,964.60x = 154,056,509,147.58
  5. Step 5: Solve for x
    x = 154,056,509,147.58/325,964.60
  6. Step 6: Final answer
    x = 472,617.30

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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.