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Finding the Fourth Proportional to 255,662.32, 383,493.48 and 78,169.33

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Solution

The fourth proportional to 255,662.32, 383,493.48 and 78,169.33 is: 117,254.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,662.32 : 383,493.48 = 78,169.33 : x
  2. Step 2: Convert to fraction form
    255,662.32/383,493.48 = 78,169.33/x
  3. Step 3: Cross multiply
    255,662.32x = 383,493.48 × 78,169.33
  4. Step 4: Simplify right side
    255,662.32x = 29,977,428,390.97
  5. Step 5: Solve for x
    x = 29,977,428,390.97/255,662.32
  6. Step 6: Final answer
    x = 117,254.00

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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.