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Finding the Fourth Proportional to 367,028.55, 550,378.80 and 142,314.30

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Solution

The fourth proportional to 367,028.55, 550,378.80 and 142,314.30 is: 213,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,028.55 : 550,378.80 = 142,314.30 : x
  2. Step 2: Convert to fraction form
    367,028.55/550,378.80 = 142,314.30/x
  3. Step 3: Cross multiply
    367,028.55x = 550,378.80 × 142,314.30
  4. Step 4: Simplify right side
    367,028.55x = 78,326,773,656.84
  5. Step 5: Solve for x
    x = 78,326,773,656.84/367,028.55
  6. Step 6: Final answer
    x = 213,407.85

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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.