Home / 287,895.11-430,956.91-187,839.86

Finding the Fourth Proportional to 287,895.11, 430,956.91 and 187,839.86

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Solution

The fourth proportional to 287,895.11, 430,956.91 and 187,839.86 is: 281,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,895.11 : 430,956.91 = 187,839.86 : x
  2. Step 2: Convert to fraction form
    287,895.11/430,956.91 = 187,839.86/x
  3. Step 3: Cross multiply
    287,895.11x = 430,956.91 × 187,839.86
  4. Step 4: Simplify right side
    287,895.11x = 80,950,885,640.43
  5. Step 5: Solve for x
    x = 80,950,885,640.43/287,895.11
  6. Step 6: Final answer
    x = 281,181.87

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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.