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Finding the Fourth Proportional to 219,592.83, 328,861.62 and 187,821.21

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Solution

The fourth proportional to 219,592.83, 328,861.62 and 187,821.21 is: 281,280.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,592.83 : 328,861.62 = 187,821.21 : x
  2. Step 2: Convert to fraction form
    219,592.83/328,861.62 = 187,821.21/x
  3. Step 3: Cross multiply
    219,592.83x = 328,861.62 × 187,821.21
  4. Step 4: Simplify right side
    219,592.83x = 61,767,187,390.96
  5. Step 5: Solve for x
    x = 61,767,187,390.96/219,592.83
  6. Step 6: Final answer
    x = 281,280.53

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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.