Home / 287,404.45-396,618.25-166,615.76

Finding the Fourth Proportional to 287,404.45, 396,618.25 and 166,615.76

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Solution

The fourth proportional to 287,404.45, 396,618.25 and 166,615.76 is: 229,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,404.45 : 396,618.25 = 166,615.76 : x
  2. Step 2: Convert to fraction form
    287,404.45/396,618.25 = 166,615.76/x
  3. Step 3: Cross multiply
    287,404.45x = 396,618.25 × 166,615.76
  4. Step 4: Simplify right side
    287,404.45x = 66,082,851,153.62
  5. Step 5: Solve for x
    x = 66,082,851,153.62/287,404.45
  6. Step 6: Final answer
    x = 229,929.81

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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.