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Finding the Fourth Proportional to 311,536.62, 467,315.46 and 86,902.56

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Solution

The fourth proportional to 311,536.62, 467,315.46 and 86,902.56 is: 130,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,536.62 : 467,315.46 = 86,902.56 : x
  2. Step 2: Convert to fraction form
    311,536.62/467,315.46 = 86,902.56/x
  3. Step 3: Cross multiply
    311,536.62x = 467,315.46 × 86,902.56
  4. Step 4: Simplify right side
    311,536.62x = 40,610,909,801.58
  5. Step 5: Solve for x
    x = 40,610,909,801.58/311,536.62
  6. Step 6: Final answer
    x = 130,356.78

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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.