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Finding the Fourth Proportional to 324,366.68, 486,548.87 and 87,709.34

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Solution

The fourth proportional to 324,366.68, 486,548.87 and 87,709.34 is: 131,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,366.68 : 486,548.87 = 87,709.34 : x
  2. Step 2: Convert to fraction form
    324,366.68/486,548.87 = 87,709.34/x
  3. Step 3: Cross multiply
    324,366.68x = 486,548.87 × 87,709.34
  4. Step 4: Simplify right side
    324,366.68x = 42,674,877,394.15
  5. Step 5: Solve for x
    x = 42,674,877,394.15/324,366.68
  6. Step 6: Final answer
    x = 131,563.69

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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.