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Finding the Fourth Proportional to 300,376.10, 450,494.07 and 87,086.77

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Solution

The fourth proportional to 300,376.10, 450,494.07 and 87,086.77 is: 130,609.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,376.10 : 450,494.07 = 87,086.77 : x
  2. Step 2: Convert to fraction form
    300,376.10/450,494.07 = 87,086.77/x
  3. Step 3: Cross multiply
    300,376.10x = 450,494.07 × 87,086.77
  4. Step 4: Simplify right side
    300,376.10x = 39,232,074,347.38
  5. Step 5: Solve for x
    x = 39,232,074,347.38/300,376.10
  6. Step 6: Final answer
    x = 130,609.84

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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.