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Finding the Fourth Proportional to 339,327.40, 509,048.70 and 102,668.20

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Solution

The fourth proportional to 339,327.40, 509,048.70 and 102,668.20 is: 154,019.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,327.40 : 509,048.70 = 102,668.20 : x
  2. Step 2: Convert to fraction form
    339,327.40/509,048.70 = 102,668.20/x
  3. Step 3: Cross multiply
    339,327.40x = 509,048.70 × 102,668.20
  4. Step 4: Simplify right side
    339,327.40x = 52,263,113,741.34
  5. Step 5: Solve for x
    x = 52,263,113,741.34/339,327.40
  6. Step 6: Final answer
    x = 154,019.73

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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.