Home / 256,405,838.24-384,992,969.88-221,968,461.44

Finding the Fourth Proportional to 256,405,838.24, 384,992,969.88 and 221,968,461.44

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Solution

The fourth proportional to 256,405,838.24, 384,992,969.88 and 221,968,461.44 is: 333,285,301.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,405,838.24 : 384,992,969.88 = 221,968,461.44 : x
  2. Step 2: Convert to fraction form
    256,405,838.24/384,992,969.88 = 221,968,461.44/x
  3. Step 3: Cross multiply
    256,405,838.24x = 384,992,969.88 × 221,968,461.44
  4. Step 4: Simplify right side
    256,405,838.24x = 85,456,297,191,276,944
  5. Step 5: Solve for x
    x = 85,456,297,191,276,944/256,405,838.24
  6. Step 6: Final answer
    x = 333,285,301.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.