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Finding the Fourth Proportional to 255,668.36, 383,502.46 and 78,175.34

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Solution

The fourth proportional to 255,668.36, 383,502.46 and 78,175.34 is: 117,262.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,668.36 : 383,502.46 = 78,175.34 : x
  2. Step 2: Convert to fraction form
    255,668.36/383,502.46 = 78,175.34/x
  3. Step 3: Cross multiply
    255,668.36x = 383,502.46 × 78,175.34
  4. Step 4: Simplify right side
    255,668.36x = 29,980,435,201.34
  5. Step 5: Solve for x
    x = 29,980,435,201.34/255,668.36
  6. Step 6: Final answer
    x = 117,262.99

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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.