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Finding the Fourth Proportional to 324,266.70, 486,140.85 and 137,124.30

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Solution

The fourth proportional to 324,266.70, 486,140.85 and 137,124.30 is: 205,576.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,266.70 : 486,140.85 = 137,124.30 : x
  2. Step 2: Convert to fraction form
    324,266.70/486,140.85 = 137,124.30/x
  3. Step 3: Cross multiply
    324,266.70x = 486,140.85 × 137,124.30
  4. Step 4: Simplify right side
    324,266.70x = 66,661,723,757.66
  5. Step 5: Solve for x
    x = 66,661,723,757.66/324,266.70
  6. Step 6: Final answer
    x = 205,576.84

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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.