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Finding the Fourth Proportional to 223,342.95, 308,212.26 and 121,366.49

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Solution

The fourth proportional to 223,342.95, 308,212.26 and 121,366.49 is: 167,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,342.95 : 308,212.26 = 121,366.49 : x
  2. Step 2: Convert to fraction form
    223,342.95/308,212.26 = 121,366.49/x
  3. Step 3: Cross multiply
    223,342.95x = 308,212.26 × 121,366.49
  4. Step 4: Simplify right side
    223,342.95x = 37,406,639,199.01
  5. Step 5: Solve for x
    x = 37,406,639,199.01/223,342.95
  6. Step 6: Final answer
    x = 167,485.20

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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.