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Finding the Fourth Proportional to 485,862.63, 670,491.45 and 270,997.17

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Solution

The fourth proportional to 485,862.63, 670,491.45 and 270,997.17 is: 373,976.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,862.63 : 670,491.45 = 270,997.17 : x
  2. Step 2: Convert to fraction form
    485,862.63/670,491.45 = 270,997.17/x
  3. Step 3: Cross multiply
    485,862.63x = 670,491.45 × 270,997.17
  4. Step 4: Simplify right side
    485,862.63x = 181,701,285,459.20
  5. Step 5: Solve for x
    x = 181,701,285,459.20/485,862.63
  6. Step 6: Final answer
    x = 373,976.66

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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.