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Finding the Fourth Proportional to 339,548.22, 508,928.64 and 319,865.22

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Solution

The fourth proportional to 339,548.22, 508,928.64 and 319,865.22 is: 479,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,548.22 : 508,928.64 = 319,865.22 : x
  2. Step 2: Convert to fraction form
    339,548.22/508,928.64 = 319,865.22/x
  3. Step 3: Cross multiply
    339,548.22x = 508,928.64 × 319,865.22
  4. Step 4: Simplify right side
    339,548.22x = 162,788,570,198.41
  5. Step 5: Solve for x
    x = 162,788,570,198.41/339,548.22
  6. Step 6: Final answer
    x = 479,426.96

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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.