Home / 415,986.45-624,002.38-131,655.78

Finding the Fourth Proportional to 415,986.45, 624,002.38 and 131,655.78

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Solution

The fourth proportional to 415,986.45, 624,002.38 and 131,655.78 is: 197,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,986.45 : 624,002.38 = 131,655.78 : x
  2. Step 2: Convert to fraction form
    415,986.45/624,002.38 = 131,655.78/x
  3. Step 3: Cross multiply
    415,986.45x = 624,002.38 × 131,655.78
  4. Step 4: Simplify right side
    415,986.45x = 82,153,520,834.52
  5. Step 5: Solve for x
    x = 82,153,520,834.52/415,986.45
  6. Step 6: Final answer
    x = 197,490.86

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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.