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Finding the Fourth Proportional to 768,090.19, 1,152,249.41 and 248,591.57

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Solution

The fourth proportional to 768,090.19, 1,152,249.41 and 248,591.57 is: 372,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,090.19 : 1,152,249.41 = 248,591.57 : x
  2. Step 2: Convert to fraction form
    768,090.19/1,152,249.41 = 248,591.57/x
  3. Step 3: Cross multiply
    768,090.19x = 1,152,249.41 × 248,591.57
  4. Step 4: Simplify right side
    768,090.19x = 286,439,493,365.58
  5. Step 5: Solve for x
    x = 286,439,493,365.58/768,090.19
  6. Step 6: Final answer
    x = 372,924.30

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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.