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Finding the Fourth Proportional to 399,913.79, 599,871.83 and 115,627.49

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Solution

The fourth proportional to 399,913.79, 599,871.83 and 115,627.49 is: 173,441.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,913.79 : 599,871.83 = 115,627.49 : x
  2. Step 2: Convert to fraction form
    399,913.79/599,871.83 = 115,627.49/x
  3. Step 3: Cross multiply
    399,913.79x = 599,871.83 × 115,627.49
  4. Step 4: Simplify right side
    399,913.79x = 69,361,670,447.11
  5. Step 5: Solve for x
    x = 69,361,670,447.11/399,913.79
  6. Step 6: Final answer
    x = 173,441.56

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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.