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Finding the Fourth Proportional to 366,959.20, 550,438.80 and 145,343.20

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Solution

The fourth proportional to 366,959.20, 550,438.80 and 145,343.20 is: 218,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,959.20 : 550,438.80 = 145,343.20 : x
  2. Step 2: Convert to fraction form
    366,959.20/550,438.80 = 145,343.20/x
  3. Step 3: Cross multiply
    366,959.20x = 550,438.80 × 145,343.20
  4. Step 4: Simplify right side
    366,959.20x = 80,002,536,596.16
  5. Step 5: Solve for x
    x = 80,002,536,596.16/366,959.20
  6. Step 6: Final answer
    x = 218,014.80

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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.