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Finding the Fourth Proportional to 395,986.96, 594,039.71 and 143,326.57

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Solution

The fourth proportional to 395,986.96, 594,039.71 and 143,326.57 is: 215,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,986.96 : 594,039.71 = 143,326.57 : x
  2. Step 2: Convert to fraction form
    395,986.96/594,039.71 = 143,326.57/x
  3. Step 3: Cross multiply
    395,986.96x = 594,039.71 × 143,326.57
  4. Step 4: Simplify right side
    395,986.96x = 85,141,671,107.90
  5. Step 5: Solve for x
    x = 85,141,671,107.90/395,986.96
  6. Step 6: Final answer
    x = 215,011.30

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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.