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Finding the Fourth Proportional to 255,969.56, 383,952.72 and 87,408.56

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Solution

The fourth proportional to 255,969.56, 383,952.72 and 87,408.56 is: 131,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,969.56 : 383,952.72 = 87,408.56 : x
  2. Step 2: Convert to fraction form
    255,969.56/383,952.72 = 87,408.56/x
  3. Step 3: Cross multiply
    255,969.56x = 383,952.72 × 87,408.56
  4. Step 4: Simplify right side
    255,969.56x = 33,560,754,363.28
  5. Step 5: Solve for x
    x = 33,560,754,363.28/255,969.56
  6. Step 6: Final answer
    x = 131,112.29

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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.