Home / 221,306,809.20-305,407,647.63-120,839,229.86

Finding the Fourth Proportional to 221,306,809.20, 305,407,647.63 and 120,839,229.86

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Solution

The fourth proportional to 221,306,809.20, 305,407,647.63 and 120,839,229.86 is: 166,760,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,306,809.20 : 305,407,647.63 = 120,839,229.86 : x
  2. Step 2: Convert to fraction form
    221,306,809.20/305,407,647.63 = 120,839,229.86/x
  3. Step 3: Cross multiply
    221,306,809.20x = 305,407,647.63 × 120,839,229.86
  4. Step 4: Simplify right side
    221,306,809.20x = 36,905,224,931,436,416
  5. Step 5: Solve for x
    x = 36,905,224,931,436,416/221,306,809.20
  6. Step 6: Final answer
    x = 166,760,458.32

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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.