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Finding the Fourth Proportional to 255,622.71, 383,449.44 and 78,131.26

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Solution

The fourth proportional to 255,622.71, 383,449.44 and 78,131.26 is: 117,201.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,622.71 : 383,449.44 = 78,131.26 : x
  2. Step 2: Convert to fraction form
    255,622.71/383,449.44 = 78,131.26/x
  3. Step 3: Cross multiply
    255,622.71x = 383,449.44 × 78,131.26
  4. Step 4: Simplify right side
    255,622.71x = 29,959,387,587.35
  5. Step 5: Solve for x
    x = 29,959,387,587.35/255,622.71
  6. Step 6: Final answer
    x = 117,201.59

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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.