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Finding the Fourth Proportional to 485,213.97, 669,586.35 and 270,349.41

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Solution

The fourth proportional to 485,213.97, 669,586.35 and 270,349.41 is: 373,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,213.97 : 669,586.35 = 270,349.41 : x
  2. Step 2: Convert to fraction form
    485,213.97/669,586.35 = 270,349.41/x
  3. Step 3: Cross multiply
    485,213.97x = 669,586.35 × 270,349.41
  4. Step 4: Simplify right side
    485,213.97x = 181,022,274,666.55
  5. Step 5: Solve for x
    x = 181,022,274,666.55/485,213.97
  6. Step 6: Final answer
    x = 373,077.21

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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.