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Finding the Fourth Proportional to 485,228.67, 669,597.80 and 270,357.54

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Solution

The fourth proportional to 485,228.67, 669,597.80 and 270,357.54 is: 373,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,228.67 : 669,597.80 = 270,357.54 : x
  2. Step 2: Convert to fraction form
    485,228.67/669,597.80 = 270,357.54/x
  3. Step 3: Cross multiply
    485,228.67x = 669,597.80 × 270,357.54
  4. Step 4: Simplify right side
    485,228.67x = 181,030,813,997.41
  5. Step 5: Solve for x
    x = 181,030,813,997.41/485,228.67
  6. Step 6: Final answer
    x = 373,083.51

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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.