Home / 221,322,670.45-305,426,761.76-120,851,805.20

Finding the Fourth Proportional to 221,322,670.45, 305,426,761.76 and 120,851,805.20

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Solution

The fourth proportional to 221,322,670.45, 305,426,761.76 and 120,851,805.20 is: 166,776,297.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,322,670.45 : 305,426,761.76 = 120,851,805.20 : x
  2. Step 2: Convert to fraction form
    221,322,670.45/305,426,761.76 = 120,851,805.20/x
  3. Step 3: Cross multiply
    221,322,670.45x = 305,426,761.76 × 120,851,805.20
  4. Step 4: Simplify right side
    221,322,670.45x = 36,911,375,513,861,320
  5. Step 5: Solve for x
    x = 36,911,375,513,861,320/221,322,670.45
  6. Step 6: Final answer
    x = 166,776,297.43

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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.