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Finding the Fourth Proportional to 339,756.90, 509,638.41 and 103,099.57

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Solution

The fourth proportional to 339,756.90, 509,638.41 and 103,099.57 is: 154,650.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,756.90 : 509,638.41 = 103,099.57 : x
  2. Step 2: Convert to fraction form
    339,756.90/509,638.41 = 103,099.57/x
  3. Step 3: Cross multiply
    339,756.90x = 509,638.41 × 103,099.57
  4. Step 4: Simplify right side
    339,756.90x = 52,543,499,652.39
  5. Step 5: Solve for x
    x = 52,543,499,652.39/339,756.90
  6. Step 6: Final answer
    x = 154,650.28

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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.