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Finding the Fourth Proportional to 491,969.30, 738,168.37 and 172,350.45

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Solution

The fourth proportional to 491,969.30, 738,168.37 and 172,350.45 is: 258,600.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,969.30 : 738,168.37 = 172,350.45 : x
  2. Step 2: Convert to fraction form
    491,969.30/738,168.37 = 172,350.45/x
  3. Step 3: Cross multiply
    491,969.30x = 738,168.37 × 172,350.45
  4. Step 4: Simplify right side
    491,969.30x = 127,223,650,314.39
  5. Step 5: Solve for x
    x = 127,223,650,314.39/491,969.30
  6. Step 6: Final answer
    x = 258,600.79

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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.