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Finding the Fourth Proportional to 253,692.11, 350,090.69 and 138,973.03

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Solution

The fourth proportional to 253,692.11, 350,090.69 and 138,973.03 is: 191,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,692.11 : 350,090.69 = 138,973.03 : x
  2. Step 2: Convert to fraction form
    253,692.11/350,090.69 = 138,973.03/x
  3. Step 3: Cross multiply
    253,692.11x = 350,090.69 × 138,973.03
  4. Step 4: Simplify right side
    253,692.11x = 48,653,163,374.89
  5. Step 5: Solve for x
    x = 48,653,163,374.89/253,692.11
  6. Step 6: Final answer
    x = 191,780.35

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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.