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Finding the Fourth Proportional to 407,015.43, 561,714.92 and 225,785.79

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Solution

The fourth proportional to 407,015.43, 561,714.92 and 225,785.79 is: 311,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,015.43 : 561,714.92 = 225,785.79 : x
  2. Step 2: Convert to fraction form
    407,015.43/561,714.92 = 225,785.79/x
  3. Step 3: Cross multiply
    407,015.43x = 561,714.92 × 225,785.79
  4. Step 4: Simplify right side
    407,015.43x = 126,827,245,838.06
  5. Step 5: Solve for x
    x = 126,827,245,838.06/407,015.43
  6. Step 6: Final answer
    x = 311,603.04

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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.