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Finding the Fourth Proportional to 485,856.77, 670,480.58 and 270,996.66

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Solution

The fourth proportional to 485,856.77, 670,480.58 and 270,996.66 is: 373,974.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,856.77 : 670,480.58 = 270,996.66 : x
  2. Step 2: Convert to fraction form
    485,856.77/670,480.58 = 270,996.66/x
  3. Step 3: Cross multiply
    485,856.77x = 670,480.58 × 270,996.66
  4. Step 4: Simplify right side
    485,856.77x = 181,697,998,452.35
  5. Step 5: Solve for x
    x = 181,697,998,452.35/485,856.77
  6. Step 6: Final answer
    x = 373,974.41

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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.