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Finding the Fourth Proportional to 378,785.52, 568,030.62 and 141,999

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Solution

The fourth proportional to 378,785.52, 568,030.62 and 141,999 is: 212,943.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,785.52 : 568,030.62 = 141,999 : x
  2. Step 2: Convert to fraction form
    378,785.52/568,030.62 = 141,999/x
  3. Step 3: Cross multiply
    378,785.52x = 568,030.62 × 141,999
  4. Step 4: Simplify right side
    378,785.52x = 80,659,780,009.38
  5. Step 5: Solve for x
    x = 80,659,780,009.38/378,785.52
  6. Step 6: Final answer
    x = 212,943.15

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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.