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Finding the Fourth Proportional to 219,285.62, 328,940.27 and 69,515

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Solution

The fourth proportional to 219,285.62, 328,940.27 and 69,515 is: 104,276.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,285.62 : 328,940.27 = 69,515 : x
  2. Step 2: Convert to fraction form
    219,285.62/328,940.27 = 69,515/x
  3. Step 3: Cross multiply
    219,285.62x = 328,940.27 × 69,515
  4. Step 4: Simplify right side
    219,285.62x = 22,866,282,869.05
  5. Step 5: Solve for x
    x = 22,866,282,869.05/219,285.62
  6. Step 6: Final answer
    x = 104,276.25

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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.