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Finding the Fourth Proportional to 300,376.95, 450,495.33 and 87,087.61

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Solution

The fourth proportional to 300,376.95, 450,495.33 and 87,087.61 is: 130,611.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,376.95 : 450,495.33 = 87,087.61 : x
  2. Step 2: Convert to fraction form
    300,376.95/450,495.33 = 87,087.61/x
  3. Step 3: Cross multiply
    300,376.95x = 450,495.33 × 87,087.61
  4. Step 4: Simplify right side
    300,376.95x = 39,232,561,605.86
  5. Step 5: Solve for x
    x = 39,232,561,605.86/300,376.95
  6. Step 6: Final answer
    x = 130,611.09

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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.