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Finding the Fourth Proportional to 223,552.20, 308,504.08 and 121,578.64

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Solution

The fourth proportional to 223,552.20, 308,504.08 and 121,578.64 is: 167,779.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,552.20 : 308,504.08 = 121,578.64 : x
  2. Step 2: Convert to fraction form
    223,552.20/308,504.08 = 121,578.64/x
  3. Step 3: Cross multiply
    223,552.20x = 308,504.08 × 121,578.64
  4. Step 4: Simplify right side
    223,552.20x = 37,507,506,480.85
  5. Step 5: Solve for x
    x = 37,507,506,480.85/223,552.20
  6. Step 6: Final answer
    x = 167,779.63

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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.