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Finding the Fourth Proportional to 485,355.48, 669,791.56 and 270,491.20

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Solution

The fourth proportional to 485,355.48, 669,791.56 and 270,491.20 is: 373,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,355.48 : 669,791.56 = 270,491.20 : x
  2. Step 2: Convert to fraction form
    485,355.48/669,791.56 = 270,491.20/x
  3. Step 3: Cross multiply
    485,355.48x = 669,791.56 × 270,491.20
  4. Step 4: Simplify right side
    485,355.48x = 181,172,722,814.27
  5. Step 5: Solve for x
    x = 181,172,722,814.27/485,355.48
  6. Step 6: Final answer
    x = 373,278.41

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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.