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Finding the Fourth Proportional to 345,091.40, 517,425.90 and 134,486.60

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Solution

The fourth proportional to 345,091.40, 517,425.90 and 134,486.60 is: 201,647.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,091.40 : 517,425.90 = 134,486.60 : x
  2. Step 2: Convert to fraction form
    345,091.40/517,425.90 = 134,486.60/x
  3. Step 3: Cross multiply
    345,091.40x = 517,425.90 × 134,486.60
  4. Step 4: Simplify right side
    345,091.40x = 69,586,850,042.94
  5. Step 5: Solve for x
    x = 69,586,850,042.94/345,091.40
  6. Step 6: Final answer
    x = 201,647.59

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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.