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Finding the Fourth Proportional to 223,265.29, 308,104.87 and 121,289.95

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Solution

The fourth proportional to 223,265.29, 308,104.87 and 121,289.95 is: 167,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,265.29 : 308,104.87 = 121,289.95 : x
  2. Step 2: Convert to fraction form
    223,265.29/308,104.87 = 121,289.95/x
  3. Step 3: Cross multiply
    223,265.29x = 308,104.87 × 121,289.95
  4. Step 4: Simplify right side
    223,265.29x = 37,370,024,277.06
  5. Step 5: Solve for x
    x = 37,370,024,277.06/223,265.29
  6. Step 6: Final answer
    x = 167,379.46

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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.