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Finding the Fourth Proportional to 442,986.86, 664,545.50 and 143,367.86

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Solution

The fourth proportional to 442,986.86, 664,545.50 and 143,367.86 is: 215,072.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,986.86 : 664,545.50 = 143,367.86 : x
  2. Step 2: Convert to fraction form
    442,986.86/664,545.50 = 143,367.86/x
  3. Step 3: Cross multiply
    442,986.86x = 664,545.50 × 143,367.86
  4. Step 4: Simplify right side
    442,986.86x = 95,274,462,168.06
  5. Step 5: Solve for x
    x = 95,274,462,168.06/442,986.86
  6. Step 6: Final answer
    x = 215,072.89

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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.