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Finding the Fourth Proportional to 591,485.30, 816,250.10 and 319,553.03

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Solution

The fourth proportional to 591,485.30, 816,250.10 and 319,553.03 is: 440,983.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,485.30 : 816,250.10 = 319,553.03 : x
  2. Step 2: Convert to fraction form
    591,485.30/816,250.10 = 319,553.03/x
  3. Step 3: Cross multiply
    591,485.30x = 816,250.10 × 319,553.03
  4. Step 4: Simplify right side
    591,485.30x = 260,835,193,135.66
  5. Step 5: Solve for x
    x = 260,835,193,135.66/591,485.30
  6. Step 6: Final answer
    x = 440,983.39

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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.