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Finding the Fourth Proportional to 531,091.11, 732,896.20 and 289,375.37

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Solution

The fourth proportional to 531,091.11, 732,896.20 and 289,375.37 is: 399,332.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,091.11 : 732,896.20 = 289,375.37 : x
  2. Step 2: Convert to fraction form
    531,091.11/732,896.20 = 289,375.37/x
  3. Step 3: Cross multiply
    531,091.11x = 732,896.20 × 289,375.37
  4. Step 4: Simplify right side
    531,091.11x = 212,082,109,046.59
  5. Step 5: Solve for x
    x = 212,082,109,046.59/531,091.11
  6. Step 6: Final answer
    x = 399,332.82

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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.