Home / 275,985.20-380,855.04-153,472.70

Finding the Fourth Proportional to 275,985.20, 380,855.04 and 153,472.70

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Solution

The fourth proportional to 275,985.20, 380,855.04 and 153,472.70 is: 211,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,985.20 : 380,855.04 = 153,472.70 : x
  2. Step 2: Convert to fraction form
    275,985.20/380,855.04 = 153,472.70/x
  3. Step 3: Cross multiply
    275,985.20x = 380,855.04 × 153,472.70
  4. Step 4: Simplify right side
    275,985.20x = 58,450,851,297.41
  5. Step 5: Solve for x
    x = 58,450,851,297.41/275,985.20
  6. Step 6: Final answer
    x = 211,789.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.