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Finding the Fourth Proportional to 311,666.52, 467,499.89 and 75,009.20

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Solution

The fourth proportional to 311,666.52, 467,499.89 and 75,009.20 is: 112,513.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,666.52 : 467,499.89 = 75,009.20 : x
  2. Step 2: Convert to fraction form
    311,666.52/467,499.89 = 75,009.20/x
  3. Step 3: Cross multiply
    311,666.52x = 467,499.89 × 75,009.20
  4. Step 4: Simplify right side
    311,666.52x = 35,066,794,121.62
  5. Step 5: Solve for x
    x = 35,066,794,121.62/311,666.52
  6. Step 6: Final answer
    x = 112,513.83

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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.