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Finding the Fourth Proportional to 367,443.30, 550,950.45 and 142,540.95

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Solution

The fourth proportional to 367,443.30, 550,950.45 and 142,540.95 is: 213,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,443.30 : 550,950.45 = 142,540.95 : x
  2. Step 2: Convert to fraction form
    367,443.30/550,950.45 = 142,540.95/x
  3. Step 3: Cross multiply
    367,443.30x = 550,950.45 × 142,540.95
  4. Step 4: Simplify right side
    367,443.30x = 78,533,000,545.93
  5. Step 5: Solve for x
    x = 78,533,000,545.93/367,443.30
  6. Step 6: Final answer
    x = 213,728.21

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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.