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Finding the Fourth Proportional to 367,045.80, 550,404.68 and 142,331.55

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Solution

The fourth proportional to 367,045.80, 550,404.68 and 142,331.55 is: 213,433.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,045.80 : 550,404.68 = 142,331.55 : x
  2. Step 2: Convert to fraction form
    367,045.80/550,404.68 = 142,331.55/x
  3. Step 3: Cross multiply
    367,045.80x = 550,404.68 × 142,331.55
  4. Step 4: Simplify right side
    367,045.80x = 78,339,950,520.00
  5. Step 5: Solve for x
    x = 78,339,950,520.00/367,045.80
  6. Step 6: Final answer
    x = 213,433.72

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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.