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Finding the Fourth Proportional to 319,513.26, 440,912.90 and 174,310.39

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Solution

The fourth proportional to 319,513.26, 440,912.90 and 174,310.39 is: 240,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,513.26 : 440,912.90 = 174,310.39 : x
  2. Step 2: Convert to fraction form
    319,513.26/440,912.90 = 174,310.39/x
  3. Step 3: Cross multiply
    319,513.26x = 440,912.90 × 174,310.39
  4. Step 4: Simplify right side
    319,513.26x = 76,855,700,657.31
  5. Step 5: Solve for x
    x = 76,855,700,657.31/319,513.26
  6. Step 6: Final answer
    x = 240,539.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.