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Finding the Fourth Proportional to 317,884.02, 476,850.65 and 90,175.80

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Solution

The fourth proportional to 317,884.02, 476,850.65 and 90,175.80 is: 135,270.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,884.02 : 476,850.65 = 90,175.80 : x
  2. Step 2: Convert to fraction form
    317,884.02/476,850.65 = 90,175.80/x
  3. Step 3: Cross multiply
    317,884.02x = 476,850.65 × 90,175.80
  4. Step 4: Simplify right side
    317,884.02x = 43,000,388,393.39
  5. Step 5: Solve for x
    x = 43,000,388,393.39/317,884.02
  6. Step 6: Final answer
    x = 135,270.68

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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.