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Finding the Fourth Proportional to 255,467.41, 383,247.59 and 86,979.10

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Solution

The fourth proportional to 255,467.41, 383,247.59 and 86,979.10 is: 130,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,467.41 : 383,247.59 = 86,979.10 : x
  2. Step 2: Convert to fraction form
    255,467.41/383,247.59 = 86,979.10/x
  3. Step 3: Cross multiply
    255,467.41x = 383,247.59 × 86,979.10
  4. Step 4: Simplify right side
    255,467.41x = 33,334,530,455.37
  5. Step 5: Solve for x
    x = 33,334,530,455.37/255,467.41
  6. Step 6: Final answer
    x = 130,484.47

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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.