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Finding the Fourth Proportional to 221,525.31, 305,730.54 and 126,046.97

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Solution

The fourth proportional to 221,525.31, 305,730.54 and 126,046.97 is: 173,959.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,525.31 : 305,730.54 = 126,046.97 : x
  2. Step 2: Convert to fraction form
    221,525.31/305,730.54 = 126,046.97/x
  3. Step 3: Cross multiply
    221,525.31x = 305,730.54 × 126,046.97
  4. Step 4: Simplify right side
    221,525.31x = 38,536,406,674.81
  5. Step 5: Solve for x
    x = 38,536,406,674.81/221,525.31
  6. Step 6: Final answer
    x = 173,959.38

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1.5x scale

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.