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Finding the Fourth Proportional to 219,392.46, 328,839.84 and 100,818.81

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Solution

The fourth proportional to 219,392.46, 328,839.84 and 100,818.81 is: 151,113.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,392.46 : 328,839.84 = 100,818.81 : x
  2. Step 2: Convert to fraction form
    219,392.46/328,839.84 = 100,818.81/x
  3. Step 3: Cross multiply
    219,392.46x = 328,839.84 × 100,818.81
  4. Step 4: Simplify right side
    219,392.46x = 33,153,241,349.39
  5. Step 5: Solve for x
    x = 33,153,241,349.39/219,392.46
  6. Step 6: Final answer
    x = 151,113.86

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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.