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Finding the Fourth Proportional to 253,651.51, 349,242.39 and 215,331.63

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Solution

The fourth proportional to 253,651.51, 349,242.39 and 215,331.63 is: 296,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,651.51 : 349,242.39 = 215,331.63 : x
  2. Step 2: Convert to fraction form
    253,651.51/349,242.39 = 215,331.63/x
  3. Step 3: Cross multiply
    253,651.51x = 349,242.39 × 215,331.63
  4. Step 4: Simplify right side
    253,651.51x = 75,202,933,103.80
  5. Step 5: Solve for x
    x = 75,202,933,103.80/253,651.51
  6. Step 6: Final answer
    x = 296,481.31

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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.