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Finding the Fourth Proportional to 255,841.49, 383,850.74 and 87,480.32

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Solution

The fourth proportional to 255,841.49, 383,850.74 and 87,480.32 is: 131,250.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,841.49 : 383,850.74 = 87,480.32 : x
  2. Step 2: Convert to fraction form
    255,841.49/383,850.74 = 87,480.32/x
  3. Step 3: Cross multiply
    255,841.49x = 383,850.74 × 87,480.32
  4. Step 4: Simplify right side
    255,841.49x = 33,579,386,745.76
  5. Step 5: Solve for x
    x = 33,579,386,745.76/255,841.49
  6. Step 6: Final answer
    x = 131,250.75

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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.