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Finding the Fourth Proportional to 255,662.07, 383,493.11 and 78,169.08

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Solution

The fourth proportional to 255,662.07, 383,493.11 and 78,169.08 is: 117,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,662.07 : 383,493.11 = 78,169.08 : x
  2. Step 2: Convert to fraction form
    255,662.07/383,493.11 = 78,169.08/x
  3. Step 3: Cross multiply
    255,662.07x = 383,493.11 × 78,169.08
  4. Step 4: Simplify right side
    255,662.07x = 29,977,303,204.19
  5. Step 5: Solve for x
    x = 29,977,303,204.19/255,662.07
  6. Step 6: Final answer
    x = 117,253.62

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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.