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Finding the Fourth Proportional to 485,857.02, 670,480.93 and 270,996.91

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Solution

The fourth proportional to 485,857.02, 670,480.93 and 270,996.91 is: 373,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,857.02 : 670,480.93 = 270,996.91 : x
  2. Step 2: Convert to fraction form
    485,857.02/670,480.93 = 270,996.91/x
  3. Step 3: Cross multiply
    485,857.02x = 670,480.93 × 270,996.91
  4. Step 4: Simplify right side
    485,857.02x = 181,698,259,566.43
  5. Step 5: Solve for x
    x = 181,698,259,566.43/485,857.02
  6. Step 6: Final answer
    x = 373,974.76

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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.