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Finding the Fourth Proportional to 367,086.55, 550,465.80 and 142,372.30

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Solution

The fourth proportional to 367,086.55, 550,465.80 and 142,372.30 is: 213,494.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,086.55 : 550,465.80 = 142,372.30 : x
  2. Step 2: Convert to fraction form
    367,086.55/550,465.80 = 142,372.30/x
  3. Step 3: Cross multiply
    367,086.55x = 550,465.80 × 142,372.30
  4. Step 4: Simplify right side
    367,086.55x = 78,371,082,017.34
  5. Step 5: Solve for x
    x = 78,371,082,017.34/367,086.55
  6. Step 6: Final answer
    x = 213,494.83

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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.