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Finding the Fourth Proportional to 633,539.99, 950,108.78 and 206,978.60

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Solution

The fourth proportional to 633,539.99, 950,108.78 and 206,978.60 is: 310,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,539.99 : 950,108.78 = 206,978.60 : x
  2. Step 2: Convert to fraction form
    633,539.99/950,108.78 = 206,978.60/x
  3. Step 3: Cross multiply
    633,539.99x = 950,108.78 × 206,978.60
  4. Step 4: Simplify right side
    633,539.99x = 196,652,179,346.67
  5. Step 5: Solve for x
    x = 196,652,179,346.67/633,539.99
  6. Step 6: Final answer
    x = 310,402.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.