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Finding the Fourth Proportional to 323,841.60, 485,762.40 and 317,620.80

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Solution

The fourth proportional to 323,841.60, 485,762.40 and 317,620.80 is: 476,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,841.60 : 485,762.40 = 317,620.80 : x
  2. Step 2: Convert to fraction form
    323,841.60/485,762.40 = 317,620.80/x
  3. Step 3: Cross multiply
    323,841.60x = 485,762.40 × 317,620.80
  4. Step 4: Simplify right side
    323,841.60x = 154,288,242,097.92
  5. Step 5: Solve for x
    x = 154,288,242,097.92/323,841.60
  6. Step 6: Final answer
    x = 476,431.20

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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.