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Finding the Fourth Proportional to 223,481.57, 308,400.09 and 121,509.05

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Solution

The fourth proportional to 223,481.57, 308,400.09 and 121,509.05 is: 167,680.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,481.57 : 308,400.09 = 121,509.05 : x
  2. Step 2: Convert to fraction form
    223,481.57/308,400.09 = 121,509.05/x
  3. Step 3: Cross multiply
    223,481.57x = 308,400.09 × 121,509.05
  4. Step 4: Simplify right side
    223,481.57x = 37,473,401,955.81
  5. Step 5: Solve for x
    x = 37,473,401,955.81/223,481.57
  6. Step 6: Final answer
    x = 167,680.06

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1.5x scale

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.