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Finding the Fourth Proportional to 253,788.50, 380,682.75 and 87,576.50

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Solution

The fourth proportional to 253,788.50, 380,682.75 and 87,576.50 is: 131,364.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,788.50 : 380,682.75 = 87,576.50 : x
  2. Step 2: Convert to fraction form
    253,788.50/380,682.75 = 87,576.50/x
  3. Step 3: Cross multiply
    253,788.50x = 380,682.75 × 87,576.50
  4. Step 4: Simplify right side
    253,788.50x = 33,338,862,855.38
  5. Step 5: Solve for x
    x = 33,338,862,855.38/253,788.50
  6. Step 6: Final answer
    x = 131,364.75

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1.5x scale

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.