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Finding the Fourth Proportional to 318,108.45, 438,978.56 and 174,867.47

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Solution

The fourth proportional to 318,108.45, 438,978.56 and 174,867.47 is: 241,311.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,108.45 : 438,978.56 = 174,867.47 : x
  2. Step 2: Convert to fraction form
    318,108.45/438,978.56 = 174,867.47/x
  3. Step 3: Cross multiply
    318,108.45x = 438,978.56 × 174,867.47
  4. Step 4: Simplify right side
    318,108.45x = 76,763,067,102.21
  5. Step 5: Solve for x
    x = 76,763,067,102.21/318,108.45
  6. Step 6: Final answer
    x = 241,311.00

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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.