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Finding the Fourth Proportional to 221,213.82, 305,300.94 and 125,734.92

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Solution

The fourth proportional to 221,213.82, 305,300.94 and 125,734.92 is: 173,528.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,213.82 : 305,300.94 = 125,734.92 : x
  2. Step 2: Convert to fraction form
    221,213.82/305,300.94 = 125,734.92/x
  3. Step 3: Cross multiply
    221,213.82x = 305,300.94 × 125,734.92
  4. Step 4: Simplify right side
    221,213.82x = 38,386,989,266.82
  5. Step 5: Solve for x
    x = 38,386,989,266.82/221,213.82
  6. Step 6: Final answer
    x = 173,528.89

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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.