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Finding the Fourth Proportional to 399,995.40, 599,336.82 and 242,268.84

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Solution

The fourth proportional to 399,995.40, 599,336.82 and 242,268.84 is: 363,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,995.40 : 599,336.82 = 242,268.84 : x
  2. Step 2: Convert to fraction form
    399,995.40/599,336.82 = 242,268.84/x
  3. Step 3: Cross multiply
    399,995.40x = 599,336.82 × 242,268.84
  4. Step 4: Simplify right side
    399,995.40x = 145,200,636,150.69
  5. Step 5: Solve for x
    x = 145,200,636,150.69/399,995.40
  6. Step 6: Final answer
    x = 363,005.76

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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.