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Finding the Fourth Proportional to 376,791.12, 565,212.60 and 127,388.88

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Solution

The fourth proportional to 376,791.12, 565,212.60 and 127,388.88 is: 191,092.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,791.12 : 565,212.60 = 127,388.88 : x
  2. Step 2: Convert to fraction form
    376,791.12/565,212.60 = 127,388.88/x
  3. Step 3: Cross multiply
    376,791.12x = 565,212.60 × 127,388.88
  4. Step 4: Simplify right side
    376,791.12x = 72,001,800,075.89
  5. Step 5: Solve for x
    x = 72,001,800,075.89/376,791.12
  6. Step 6: Final answer
    x = 191,092.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.