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Finding the Fourth Proportional to 379,861.61, 569,582.06 and 155,379.68

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Solution

The fourth proportional to 379,861.61, 569,582.06 and 155,379.68 is: 232,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,861.61 : 569,582.06 = 155,379.68 : x
  2. Step 2: Convert to fraction form
    379,861.61/569,582.06 = 155,379.68/x
  3. Step 3: Cross multiply
    379,861.61x = 569,582.06 × 155,379.68
  4. Step 4: Simplify right side
    379,861.61x = 88,501,474,591.73
  5. Step 5: Solve for x
    x = 88,501,474,591.73/379,861.61
  6. Step 6: Final answer
    x = 232,983.47

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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.