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Finding the Fourth Proportional to 345,175.40, 517,171.80 and 274,316.60

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Solution

The fourth proportional to 345,175.40, 517,171.80 and 274,316.60 is: 411,004.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,175.40 : 517,171.80 = 274,316.60 : x
  2. Step 2: Convert to fraction form
    345,175.40/517,171.80 = 274,316.60/x
  3. Step 3: Cross multiply
    345,175.40x = 517,171.80 × 274,316.60
  4. Step 4: Simplify right side
    345,175.40x = 141,868,809,791.88
  5. Step 5: Solve for x
    x = 141,868,809,791.88/345,175.40
  6. Step 6: Final answer
    x = 411,004.98

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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.