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Finding the Fourth Proportional to 494,675.80, 742,013.70 and 120,698.80

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Solution

The fourth proportional to 494,675.80, 742,013.70 and 120,698.80 is: 181,048.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,675.80 : 742,013.70 = 120,698.80 : x
  2. Step 2: Convert to fraction form
    494,675.80/742,013.70 = 120,698.80/x
  3. Step 3: Cross multiply
    494,675.80x = 742,013.70 × 120,698.80
  4. Step 4: Simplify right side
    494,675.80x = 89,560,163,173.56
  5. Step 5: Solve for x
    x = 89,560,163,173.56/494,675.80
  6. Step 6: Final answer
    x = 181,048.20

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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.