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Finding the Fourth Proportional to 538,793.39, 743,715.05 and 321,070.37

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Solution

The fourth proportional to 538,793.39, 743,715.05 and 321,070.37 is: 443,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,793.39 : 743,715.05 = 321,070.37 : x
  2. Step 2: Convert to fraction form
    538,793.39/743,715.05 = 321,070.37/x
  3. Step 3: Cross multiply
    538,793.39x = 743,715.05 × 321,070.37
  4. Step 4: Simplify right side
    538,793.39x = 238,784,860,954.14
  5. Step 5: Solve for x
    x = 238,784,860,954.14/538,793.39
  6. Step 6: Final answer
    x = 443,184.47

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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.