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Finding the Fourth Proportional to 485,858.70, 670,483.25 and 270,998.60

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Solution

The fourth proportional to 485,858.70, 670,483.25 and 270,998.60 is: 373,977.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,858.70 : 670,483.25 = 270,998.60 : x
  2. Step 2: Convert to fraction form
    485,858.70/670,483.25 = 270,998.60/x
  3. Step 3: Cross multiply
    485,858.70x = 670,483.25 × 270,998.60
  4. Step 4: Simplify right side
    485,858.70x = 181,700,022,073.45
  5. Step 5: Solve for x
    x = 181,700,022,073.45/485,858.70
  6. Step 6: Final answer
    x = 373,977.09

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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.