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Finding the Fourth Proportional to 323,746.80, 485,620.20 and 271,258.80

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Solution

The fourth proportional to 323,746.80, 485,620.20 and 271,258.80 is: 406,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,746.80 : 485,620.20 = 271,258.80 : x
  2. Step 2: Convert to fraction form
    323,746.80/485,620.20 = 271,258.80/x
  3. Step 3: Cross multiply
    323,746.80x = 485,620.20 × 271,258.80
  4. Step 4: Simplify right side
    323,746.80x = 131,728,752,707.76
  5. Step 5: Solve for x
    x = 131,728,752,707.76/323,746.80
  6. Step 6: Final answer
    x = 406,888.20

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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.