Home / 221,708,820.93-305,814,009.19-142,197,942.21

Finding the Fourth Proportional to 221,708,820.93, 305,814,009.19 and 142,197,942.21

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Solution

The fourth proportional to 221,708,820.93, 305,814,009.19 and 142,197,942.21 is: 196,140,697.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,708,820.93 : 305,814,009.19 = 142,197,942.21 : x
  2. Step 2: Convert to fraction form
    221,708,820.93/305,814,009.19 = 142,197,942.21/x
  3. Step 3: Cross multiply
    221,708,820.93x = 305,814,009.19 × 142,197,942.21
  4. Step 4: Simplify right side
    221,708,820.93x = 43,486,122,805,452,536
  5. Step 5: Solve for x
    x = 43,486,122,805,452,536/221,708,820.93
  6. Step 6: Final answer
    x = 196,140,697.62

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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.