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Finding the Fourth Proportional to 219,161.82, 328,698.93 and 69,376.62

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Solution

The fourth proportional to 219,161.82, 328,698.93 and 69,376.62 is: 104,051.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,161.82 : 328,698.93 = 69,376.62 : x
  2. Step 2: Convert to fraction form
    219,161.82/328,698.93 = 69,376.62/x
  3. Step 3: Cross multiply
    219,161.82x = 328,698.93 × 69,376.62
  4. Step 4: Simplify right side
    219,161.82x = 22,804,020,761.02
  5. Step 5: Solve for x
    x = 22,804,020,761.02/219,161.82
  6. Step 6: Final answer
    x = 104,051.06

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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.