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Finding the Fourth Proportional to 253,517.48, 349,858.25 and 138,794.21

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Solution

The fourth proportional to 253,517.48, 349,858.25 and 138,794.21 is: 191,538.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,517.48 : 349,858.25 = 138,794.21 : x
  2. Step 2: Convert to fraction form
    253,517.48/349,858.25 = 138,794.21/x
  3. Step 3: Cross multiply
    253,517.48x = 349,858.25 × 138,794.21
  4. Step 4: Simplify right side
    253,517.48x = 48,558,299,590.63
  5. Step 5: Solve for x
    x = 48,558,299,590.63/253,517.48
  6. Step 6: Final answer
    x = 191,538.27

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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.