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Finding the Fourth Proportional to 312,091.70, 467,345.55 and 171,691.70

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Solution

The fourth proportional to 312,091.70, 467,345.55 and 171,691.70 is: 257,101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,091.70 : 467,345.55 = 171,691.70 : x
  2. Step 2: Convert to fraction form
    312,091.70/467,345.55 = 171,691.70/x
  3. Step 3: Cross multiply
    312,091.70x = 467,345.55 × 171,691.70
  4. Step 4: Simplify right side
    312,091.70x = 80,239,351,966.94
  5. Step 5: Solve for x
    x = 80,239,351,966.94/312,091.70
  6. Step 6: Final answer
    x = 257,101.85

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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.