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Finding the Fourth Proportional to 223,646.47, 308,625.10 and 121,669.33

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Solution

The fourth proportional to 223,646.47, 308,625.10 and 121,669.33 is: 167,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,646.47 : 308,625.10 = 121,669.33 : x
  2. Step 2: Convert to fraction form
    223,646.47/308,625.10 = 121,669.33/x
  3. Step 3: Cross multiply
    223,646.47x = 308,625.10 × 121,669.33
  4. Step 4: Simplify right side
    223,646.47x = 37,550,209,138.18
  5. Step 5: Solve for x
    x = 37,550,209,138.18/223,646.47
  6. Step 6: Final answer
    x = 167,899.85

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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.