Home / 221,708,821.44-305,814,009.88-142,197,942.71

Finding the Fourth Proportional to 221,708,821.44, 305,814,009.88 and 142,197,942.71

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Solution

The fourth proportional to 221,708,821.44, 305,814,009.88 and 142,197,942.71 is: 196,140,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,708,821.44 : 305,814,009.88 = 142,197,942.71 : x
  2. Step 2: Convert to fraction form
    221,708,821.44/305,814,009.88 = 142,197,942.71/x
  3. Step 3: Cross multiply
    221,708,821.44x = 305,814,009.88 × 142,197,942.71
  4. Step 4: Simplify right side
    221,708,821.44x = 43,486,123,056,120,624
  5. Step 5: Solve for x
    x = 43,486,123,056,120,624/221,708,821.44
  6. Step 6: Final answer
    x = 196,140,698.30

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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.