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Finding the Fourth Proportional to 381,571.65, 572,369.66 and 191,928.45

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Solution

The fourth proportional to 381,571.65, 572,369.66 and 191,928.45 is: 287,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,571.65 : 572,369.66 = 191,928.45 : x
  2. Step 2: Convert to fraction form
    381,571.65/572,369.66 = 191,928.45/x
  3. Step 3: Cross multiply
    381,571.65x = 572,369.66 × 191,928.45
  4. Step 4: Simplify right side
    381,571.65x = 109,854,020,711.19
  5. Step 5: Solve for x
    x = 109,854,020,711.19/381,571.65
  6. Step 6: Final answer
    x = 287,898.80

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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.