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Finding the Fourth Proportional to 221,930.52, 306,264.08 and 121,328.52

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Solution

The fourth proportional to 221,930.52, 306,264.08 and 121,328.52 is: 167,433.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,930.52 : 306,264.08 = 121,328.52 : x
  2. Step 2: Convert to fraction form
    221,930.52/306,264.08 = 121,328.52/x
  3. Step 3: Cross multiply
    221,930.52x = 306,264.08 × 121,328.52
  4. Step 4: Simplify right side
    221,930.52x = 37,158,567,555.56
  5. Step 5: Solve for x
    x = 37,158,567,555.56/221,930.52
  6. Step 6: Final answer
    x = 167,433.34

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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.