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Finding the Fourth Proportional to 481,343.04, 664,427.88 and 280,139.04

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Solution

The fourth proportional to 481,343.04, 664,427.88 and 280,139.04 is: 386,693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,343.04 : 664,427.88 = 280,139.04 : x
  2. Step 2: Convert to fraction form
    481,343.04/664,427.88 = 280,139.04/x
  3. Step 3: Cross multiply
    481,343.04x = 664,427.88 × 280,139.04
  4. Step 4: Simplify right side
    481,343.04x = 186,132,188,452.44
  5. Step 5: Solve for x
    x = 186,132,188,452.44/481,343.04
  6. Step 6: Final answer
    x = 386,693.42

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1.5x scale

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.