Home / 285,537.20-428,111.40-108,017.60

Finding the Fourth Proportional to 285,537.20, 428,111.40 and 108,017.60

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Solution

The fourth proportional to 285,537.20, 428,111.40 and 108,017.60 is: 161,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,537.20 : 428,111.40 = 108,017.60 : x
  2. Step 2: Convert to fraction form
    285,537.20/428,111.40 = 108,017.60/x
  3. Step 3: Cross multiply
    285,537.20x = 428,111.40 × 108,017.60
  4. Step 4: Simplify right side
    285,537.20x = 46,243,565,960.64
  5. Step 5: Solve for x
    x = 46,243,565,960.64/285,537.20
  6. Step 6: Final answer
    x = 161,952.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.