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Finding the Fourth Proportional to 324,357.89, 486,535.64 and 87,700.50

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Solution

The fourth proportional to 324,357.89, 486,535.64 and 87,700.50 is: 131,550.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,357.89 : 486,535.64 = 87,700.50 : x
  2. Step 2: Convert to fraction form
    324,357.89/486,535.64 = 87,700.50/x
  3. Step 3: Cross multiply
    324,357.89x = 486,535.64 × 87,700.50
  4. Step 4: Simplify right side
    324,357.89x = 42,669,418,457.32
  5. Step 5: Solve for x
    x = 42,669,418,457.32/324,357.89
  6. Step 6: Final answer
    x = 131,550.43

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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.