Home / 221,136,815.20-305,166,722.16-122,018,458.72

Finding the Fourth Proportional to 221,136,815.20, 305,166,722.16 and 122,018,458.72

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Solution

The fourth proportional to 221,136,815.20, 305,166,722.16 and 122,018,458.72 is: 168,384,323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,136,815.20 : 305,166,722.16 = 122,018,458.72 : x
  2. Step 2: Convert to fraction form
    221,136,815.20/305,166,722.16 = 122,018,458.72/x
  3. Step 3: Cross multiply
    221,136,815.20x = 305,166,722.16 × 122,018,458.72
  4. Step 4: Simplify right side
    221,136,815.20x = 37,235,973,090,597,672
  5. Step 5: Solve for x
    x = 37,235,973,090,597,672/221,136,815.20
  6. Step 6: Final answer
    x = 168,384,323.78

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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.