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Finding the Fourth Proportional to 221,677.66, 305,913.27 and 121,073.50

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Solution

The fourth proportional to 221,677.66, 305,913.27 and 121,073.50 is: 167,080.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,677.66 : 305,913.27 = 121,073.50 : x
  2. Step 2: Convert to fraction form
    221,677.66/305,913.27 = 121,073.50/x
  3. Step 3: Cross multiply
    221,677.66x = 305,913.27 × 121,073.50
  4. Step 4: Simplify right side
    221,677.66x = 37,037,990,295.35
  5. Step 5: Solve for x
    x = 37,037,990,295.35/221,677.66
  6. Step 6: Final answer
    x = 167,080.39

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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.