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Finding the Fourth Proportional to 324,505.14, 486,697.53 and 87,817.05

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Solution

The fourth proportional to 324,505.14, 486,697.53 and 87,817.05 is: 131,709.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,505.14 : 486,697.53 = 87,817.05 : x
  2. Step 2: Convert to fraction form
    324,505.14/486,697.53 = 87,817.05/x
  3. Step 3: Cross multiply
    324,505.14x = 486,697.53 × 87,817.05
  4. Step 4: Simplify right side
    324,505.14x = 42,740,341,326.89
  5. Step 5: Solve for x
    x = 42,740,341,326.89/324,505.14
  6. Step 6: Final answer
    x = 131,709.29

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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.