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Finding the Fourth Proportional to 223,249.28, 308,228.64 and 155,243.84

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Solution

The fourth proportional to 223,249.28, 308,228.64 and 155,243.84 is: 214,337.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,249.28 : 308,228.64 = 155,243.84 : x
  2. Step 2: Convert to fraction form
    223,249.28/308,228.64 = 155,243.84/x
  3. Step 3: Cross multiply
    223,249.28x = 308,228.64 × 155,243.84
  4. Step 4: Simplify right side
    223,249.28x = 47,850,597,671.58
  5. Step 5: Solve for x
    x = 47,850,597,671.58/223,249.28
  6. Step 6: Final answer
    x = 214,337.08

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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.