Home / 312,778.07-469,167.15-76,120.75

Finding the Fourth Proportional to 312,778.07, 469,167.15 and 76,120.75

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Solution

The fourth proportional to 312,778.07, 469,167.15 and 76,120.75 is: 114,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,778.07 : 469,167.15 = 76,120.75 : x
  2. Step 2: Convert to fraction form
    312,778.07/469,167.15 = 76,120.75/x
  3. Step 3: Cross multiply
    312,778.07x = 469,167.15 × 76,120.75
  4. Step 4: Simplify right side
    312,778.07x = 35,713,355,333.36
  5. Step 5: Solve for x
    x = 35,713,355,333.36/312,778.07
  6. Step 6: Final answer
    x = 114,181.14

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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.