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Finding the Fourth Proportional to 219,376.58, 328,996.82 and 79,116.98

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Solution

The fourth proportional to 219,376.58, 328,996.82 and 79,116.98 is: 118,650.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,376.58 : 328,996.82 = 79,116.98 : x
  2. Step 2: Convert to fraction form
    219,376.58/328,996.82 = 79,116.98/x
  3. Step 3: Cross multiply
    219,376.58x = 328,996.82 × 79,116.98
  4. Step 4: Simplify right side
    219,376.58x = 26,029,234,828.00
  5. Step 5: Solve for x
    x = 26,029,234,828.00/219,376.58
  6. Step 6: Final answer
    x = 118,650.93

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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.