Home / 256,215,660.72-384,440,604.96-139,456,104.72

Finding the Fourth Proportional to 256,215,660.72, 384,440,604.96 and 139,456,104.72

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Solution

The fourth proportional to 256,215,660.72, 384,440,604.96 and 139,456,104.72 is: 209,247,901.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,215,660.72 : 384,440,604.96 = 139,456,104.72 : x
  2. Step 2: Convert to fraction form
    256,215,660.72/384,440,604.96 = 139,456,104.72/x
  3. Step 3: Cross multiply
    256,215,660.72x = 384,440,604.96 × 139,456,104.72
  4. Step 4: Simplify right side
    256,215,660.72x = 53,612,589,263,921,904
  5. Step 5: Solve for x
    x = 53,612,589,263,921,904/256,215,660.72
  6. Step 6: Final answer
    x = 209,247,901.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.