Home / 427,487.10-641,230.65-111,975.90

Finding the Fourth Proportional to 427,487.10, 641,230.65 and 111,975.90

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Solution

The fourth proportional to 427,487.10, 641,230.65 and 111,975.90 is: 167,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,487.10 : 641,230.65 = 111,975.90 : x
  2. Step 2: Convert to fraction form
    427,487.10/641,230.65 = 111,975.90/x
  3. Step 3: Cross multiply
    427,487.10x = 641,230.65 × 111,975.90
  4. Step 4: Simplify right side
    427,487.10x = 71,802,379,141.34
  5. Step 5: Solve for x
    x = 71,802,379,141.34/427,487.10
  6. Step 6: Final answer
    x = 167,963.85

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Similar ratio
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1.5x scale

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.