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Finding the Fourth Proportional to 287,561.48, 396,836.41 and 166,774.38

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Solution

The fourth proportional to 287,561.48, 396,836.41 and 166,774.38 is: 230,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,561.48 : 396,836.41 = 166,774.38 : x
  2. Step 2: Convert to fraction form
    287,561.48/396,836.41 = 166,774.38/x
  3. Step 3: Cross multiply
    287,561.48x = 396,836.41 × 166,774.38
  4. Step 4: Simplify right side
    287,561.48x = 66,182,144,254.99
  5. Step 5: Solve for x
    x = 66,182,144,254.99/287,561.48
  6. Step 6: Final answer
    x = 230,149.55

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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.