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Finding the Fourth Proportional to 223,387.20, 308,270.88 and 122,783.04

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Solution

The fourth proportional to 223,387.20, 308,270.88 and 122,783.04 is: 169,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,387.20 : 308,270.88 = 122,783.04 : x
  2. Step 2: Convert to fraction form
    223,387.20/308,270.88 = 122,783.04/x
  3. Step 3: Cross multiply
    223,387.20x = 308,270.88 × 122,783.04
  4. Step 4: Simplify right side
    223,387.20x = 37,850,435,789.88
  5. Step 5: Solve for x
    x = 37,850,435,789.88/223,387.20
  6. Step 6: Final answer
    x = 169,438.70

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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.