Home / 255,756.28-383,366.88-87,217.60

Finding the Fourth Proportional to 255,756.28, 383,366.88 and 87,217.60

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Solution

The fourth proportional to 255,756.28, 383,366.88 and 87,217.60 is: 130,735.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,756.28 : 383,366.88 = 87,217.60 : x
  2. Step 2: Convert to fraction form
    255,756.28/383,366.88 = 87,217.60/x
  3. Step 3: Cross multiply
    255,756.28x = 383,366.88 × 87,217.60
  4. Step 4: Simplify right side
    255,756.28x = 33,436,339,193.09
  5. Step 5: Solve for x
    x = 33,436,339,193.09/255,756.28
  6. Step 6: Final answer
    x = 130,735.16

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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.