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Finding the Fourth Proportional to 312,289.93, 468,147.85 and 112,561.43

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Solution

The fourth proportional to 312,289.93, 468,147.85 and 112,561.43 is: 168,738.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,289.93 : 468,147.85 = 112,561.43 : x
  2. Step 2: Convert to fraction form
    312,289.93/468,147.85 = 112,561.43/x
  3. Step 3: Cross multiply
    312,289.93x = 468,147.85 × 112,561.43
  4. Step 4: Simplify right side
    312,289.93x = 52,695,391,447.43
  5. Step 5: Solve for x
    x = 52,695,391,447.43/312,289.93
  6. Step 6: Final answer
    x = 168,738.68

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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.