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Finding the Fourth Proportional to 367,056.80, 550,421.17 and 142,342.55

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Solution

The fourth proportional to 367,056.80, 550,421.17 and 142,342.55 is: 213,450.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,056.80 : 550,421.17 = 142,342.55 : x
  2. Step 2: Convert to fraction form
    367,056.80/550,421.17 = 142,342.55/x
  3. Step 3: Cross multiply
    367,056.80x = 550,421.17 × 142,342.55
  4. Step 4: Simplify right side
    367,056.80x = 78,348,352,911.78
  5. Step 5: Solve for x
    x = 78,348,352,911.78/367,056.80
  6. Step 6: Final answer
    x = 213,450.22

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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.