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Finding the Fourth Proportional to 399,064.68, 550,824.42 and 235,872.36

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Solution

The fourth proportional to 399,064.68, 550,824.42 and 235,872.36 is: 325,571.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,064.68 : 550,824.42 = 235,872.36 : x
  2. Step 2: Convert to fraction form
    399,064.68/550,824.42 = 235,872.36/x
  3. Step 3: Cross multiply
    399,064.68x = 550,824.42 × 235,872.36
  4. Step 4: Simplify right side
    399,064.68x = 129,924,255,891.03
  5. Step 5: Solve for x
    x = 129,924,255,891.03/399,064.68
  6. Step 6: Final answer
    x = 325,571.92

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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.