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Finding the Fourth Proportional to 379,644.64, 524,041.54 and 218,563.89

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Solution

The fourth proportional to 379,644.64, 524,041.54 and 218,563.89 is: 301,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,644.64 : 524,041.54 = 218,563.89 : x
  2. Step 2: Convert to fraction form
    379,644.64/524,041.54 = 218,563.89/x
  3. Step 3: Cross multiply
    379,644.64x = 524,041.54 × 218,563.89
  4. Step 4: Simplify right side
    379,644.64x = 114,536,556,957.58
  5. Step 5: Solve for x
    x = 114,536,556,957.58/379,644.64
  6. Step 6: Final answer
    x = 301,694.12

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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.