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Finding the Fourth Proportional to 223,212.56, 308,035.56 and 121,240.00

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Solution

The fourth proportional to 223,212.56, 308,035.56 and 121,240.00 is: 167,312.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,212.56 : 308,035.56 = 121,240.00 : x
  2. Step 2: Convert to fraction form
    223,212.56/308,035.56 = 121,240.00/x
  3. Step 3: Cross multiply
    223,212.56x = 308,035.56 × 121,240.00
  4. Step 4: Simplify right side
    223,212.56x = 37,346,232,134.09
  5. Step 5: Solve for x
    x = 37,346,232,134.09/223,212.56
  6. Step 6: Final answer
    x = 167,312.42

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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.