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Finding the Fourth Proportional to 311,539.79, 467,268.16 and 86,881.41

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Solution

The fourth proportional to 311,539.79, 467,268.16 and 86,881.41 is: 130,310.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,539.79 : 467,268.16 = 86,881.41 : x
  2. Step 2: Convert to fraction form
    311,539.79/467,268.16 = 86,881.41/x
  3. Step 3: Cross multiply
    311,539.79x = 467,268.16 × 86,881.41
  4. Step 4: Simplify right side
    311,539.79x = 40,596,916,717.87
  5. Step 5: Solve for x
    x = 40,596,916,717.87/311,539.79
  6. Step 6: Final answer
    x = 130,310.54

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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.