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Finding the Fourth Proportional to 485,245.98, 669,630.42 and 270,381.48

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Solution

The fourth proportional to 485,245.98, 669,630.42 and 270,381.48 is: 373,121.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,245.98 : 669,630.42 = 270,381.48 : x
  2. Step 2: Convert to fraction form
    485,245.98/669,630.42 = 270,381.48/x
  3. Step 3: Cross multiply
    485,245.98x = 669,630.42 × 270,381.48
  4. Step 4: Simplify right side
    485,245.98x = 181,055,664,012.62
  5. Step 5: Solve for x
    x = 181,055,664,012.62/485,245.98
  6. Step 6: Final answer
    x = 373,121.41

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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.