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Finding the Fourth Proportional to 324,171.45, 486,218.90 and 87,532.58

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Solution

The fourth proportional to 324,171.45, 486,218.90 and 87,532.58 is: 131,288.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,171.45 : 486,218.90 = 87,532.58 : x
  2. Step 2: Convert to fraction form
    324,171.45/486,218.90 = 87,532.58/x
  3. Step 3: Cross multiply
    324,171.45x = 486,218.90 × 87,532.58
  4. Step 4: Simplify right side
    324,171.45x = 42,559,996,196.14
  5. Step 5: Solve for x
    x = 42,559,996,196.14/324,171.45
  6. Step 6: Final answer
    x = 131,288.54

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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.