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Finding the Fourth Proportional to 345,049.60, 517,266.58 and 134,638.60

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Solution

The fourth proportional to 345,049.60, 517,266.58 and 134,638.60 is: 201,837.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,049.60 : 517,266.58 = 134,638.60 : x
  2. Step 2: Convert to fraction form
    345,049.60/517,266.58 = 134,638.60/x
  3. Step 3: Cross multiply
    345,049.60x = 517,266.58 × 134,638.60
  4. Step 4: Simplify right side
    345,049.60x = 69,644,048,157.99
  5. Step 5: Solve for x
    x = 69,644,048,157.99/345,049.60
  6. Step 6: Final answer
    x = 201,837.79

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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.