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Finding the Fourth Proportional to 540,393.48, 809,889.12 and 220,172.94

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Solution

The fourth proportional to 540,393.48, 809,889.12 and 220,172.94 is: 329,973.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,393.48 : 809,889.12 = 220,172.94 : x
  2. Step 2: Convert to fraction form
    540,393.48/809,889.12 = 220,172.94/x
  3. Step 3: Cross multiply
    540,393.48x = 809,889.12 × 220,172.94
  4. Step 4: Simplify right side
    540,393.48x = 178,315,668,624.41
  5. Step 5: Solve for x
    x = 178,315,668,624.41/540,393.48
  6. Step 6: Final answer
    x = 329,973.76

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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.