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Finding the Fourth Proportional to 423,699.57, 584,563.12 and 239,913

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Solution

The fourth proportional to 423,699.57, 584,563.12 and 239,913 is: 330,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,699.57 : 584,563.12 = 239,913 : x
  2. Step 2: Convert to fraction form
    423,699.57/584,563.12 = 239,913/x
  3. Step 3: Cross multiply
    423,699.57x = 584,563.12 × 239,913
  4. Step 4: Simplify right side
    423,699.57x = 140,244,291,208.78
  5. Step 5: Solve for x
    x = 140,244,291,208.78/423,699.57
  6. Step 6: Final answer
    x = 330,999.37

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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.