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Finding the Fourth Proportional to 324,429.46, 486,495.84 and 99,711.58

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Solution

The fourth proportional to 324,429.46, 486,495.84 and 99,711.58 is: 149,521.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,429.46 : 486,495.84 = 99,711.58 : x
  2. Step 2: Convert to fraction form
    324,429.46/486,495.84 = 99,711.58/x
  3. Step 3: Cross multiply
    324,429.46x = 486,495.84 × 99,711.58
  4. Step 4: Simplify right side
    324,429.46x = 48,509,268,869.83
  5. Step 5: Solve for x
    x = 48,509,268,869.83/324,429.46
  6. Step 6: Final answer
    x = 149,521.78

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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.