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Finding the Fourth Proportional to 367,042.80, 550,400.18 and 142,328.55

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Solution

The fourth proportional to 367,042.80, 550,400.18 and 142,328.55 is: 213,429.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,042.80 : 550,400.18 = 142,328.55 : x
  2. Step 2: Convert to fraction form
    367,042.80/550,400.18 = 142,328.55/x
  3. Step 3: Cross multiply
    367,042.80x = 550,400.18 × 142,328.55
  4. Step 4: Simplify right side
    367,042.80x = 78,337,658,827.50
  5. Step 5: Solve for x
    x = 78,337,658,827.50/367,042.80
  6. Step 6: Final answer
    x = 213,429.22

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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.