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Finding the Fourth Proportional to 262,002.72, 393,080.62 and 84,505.80

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Solution

The fourth proportional to 262,002.72, 393,080.62 and 84,505.80 is: 126,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,002.72 : 393,080.62 = 84,505.80 : x
  2. Step 2: Convert to fraction form
    262,002.72/393,080.62 = 84,505.80/x
  3. Step 3: Cross multiply
    262,002.72x = 393,080.62 × 84,505.80
  4. Step 4: Simplify right side
    262,002.72x = 33,217,592,257.60
  5. Step 5: Solve for x
    x = 33,217,592,257.60/262,002.72
  6. Step 6: Final answer
    x = 126,783.39

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1.5x scale

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.