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Finding the Fourth Proportional to 240,221.92, 331,472.22 and 138,208.48

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Solution

The fourth proportional to 240,221.92, 331,472.22 and 138,208.48 is: 190,708.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,221.92 : 331,472.22 = 138,208.48 : x
  2. Step 2: Convert to fraction form
    240,221.92/331,472.22 = 138,208.48/x
  3. Step 3: Cross multiply
    240,221.92x = 331,472.22 × 138,208.48
  4. Step 4: Simplify right side
    240,221.92x = 45,812,271,688.43
  5. Step 5: Solve for x
    x = 45,812,271,688.43/240,221.92
  6. Step 6: Final answer
    x = 190,708.12

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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.