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Finding the Fourth Proportional to 223,619.68, 308,590.80 and 123,015.52

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Solution

The fourth proportional to 223,619.68, 308,590.80 and 123,015.52 is: 169,759.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,619.68 : 308,590.80 = 123,015.52 : x
  2. Step 2: Convert to fraction form
    223,619.68/308,590.80 = 123,015.52/x
  3. Step 3: Cross multiply
    223,619.68x = 308,590.80 × 123,015.52
  4. Step 4: Simplify right side
    223,619.68x = 37,961,457,729.22
  5. Step 5: Solve for x
    x = 37,961,457,729.22/223,619.68
  6. Step 6: Final answer
    x = 169,759.02

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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.