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Finding the Fourth Proportional to 358,812.07, 538,218.86 and 336,890.13

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Solution

The fourth proportional to 358,812.07, 538,218.86 and 336,890.13 is: 505,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,812.07 : 538,218.86 = 336,890.13 : x
  2. Step 2: Convert to fraction form
    358,812.07/538,218.86 = 336,890.13/x
  3. Step 3: Cross multiply
    358,812.07x = 538,218.86 × 336,890.13
  4. Step 4: Simplify right side
    358,812.07x = 181,320,619,906.09
  5. Step 5: Solve for x
    x = 181,320,619,906.09/358,812.07
  6. Step 6: Final answer
    x = 505,335.90

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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.