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Finding the Fourth Proportional to 253,692.27, 350,090.90 and 138,973.18

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Solution

The fourth proportional to 253,692.27, 350,090.90 and 138,973.18 is: 191,780.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,692.27 : 350,090.90 = 138,973.18 : x
  2. Step 2: Convert to fraction form
    253,692.27/350,090.90 = 138,973.18/x
  3. Step 3: Cross multiply
    253,692.27x = 350,090.90 × 138,973.18
  4. Step 4: Simplify right side
    253,692.27x = 48,653,245,662.06
  5. Step 5: Solve for x
    x = 48,653,245,662.06/253,692.27
  6. Step 6: Final answer
    x = 191,780.56

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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.