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Finding the Fourth Proportional to 324,614.63, 486,903.72 and 87,939.92

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Solution

The fourth proportional to 324,614.63, 486,903.72 and 87,939.92 is: 131,904.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,614.63 : 486,903.72 = 87,939.92 : x
  2. Step 2: Convert to fraction form
    324,614.63/486,903.72 = 87,939.92/x
  3. Step 3: Cross multiply
    324,614.63x = 486,903.72 × 87,939.92
  4. Step 4: Simplify right side
    324,614.63x = 42,818,274,184.50
  5. Step 5: Solve for x
    x = 42,818,274,184.50/324,614.63
  6. Step 6: Final answer
    x = 131,904.94

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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.