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Finding the Fourth Proportional to 339,645.40, 509,516.70 and 103,006.60

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Solution

The fourth proportional to 339,645.40, 509,516.70 and 103,006.60 is: 154,524.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,645.40 : 509,516.70 = 103,006.60 : x
  2. Step 2: Convert to fraction form
    339,645.40/509,516.70 = 103,006.60/x
  3. Step 3: Cross multiply
    339,645.40x = 509,516.70 × 103,006.60
  4. Step 4: Simplify right side
    339,645.40x = 52,483,582,910.22
  5. Step 5: Solve for x
    x = 52,483,582,910.22/339,645.40
  6. Step 6: Final answer
    x = 154,524.64

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1.5x scale

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.