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Finding the Fourth Proportional to 379,863.73, 569,585.23 and 155,381.80

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Solution

The fourth proportional to 379,863.73, 569,585.23 and 155,381.80 is: 232,986.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,863.73 : 569,585.23 = 155,381.80 : x
  2. Step 2: Convert to fraction form
    379,863.73/569,585.23 = 155,381.80/x
  3. Step 3: Cross multiply
    379,863.73x = 569,585.23 × 155,381.80
  4. Step 4: Simplify right side
    379,863.73x = 88,503,178,290.81
  5. Step 5: Solve for x
    x = 88,503,178,290.81/379,863.73
  6. Step 6: Final answer
    x = 232,986.65

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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.