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Finding the Fourth Proportional to 339,655.47, 508,818.86 and 279,769.92

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Solution

The fourth proportional to 339,655.47, 508,818.86 and 279,769.92 is: 419,107.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,655.47 : 508,818.86 = 279,769.92 : x
  2. Step 2: Convert to fraction form
    339,655.47/508,818.86 = 279,769.92/x
  3. Step 3: Cross multiply
    339,655.47x = 508,818.86 × 279,769.92
  4. Step 4: Simplify right side
    339,655.47x = 142,352,211,756.69
  5. Step 5: Solve for x
    x = 142,352,211,756.69/339,655.47
  6. Step 6: Final answer
    x = 419,107.67

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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.