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Finding the Fourth Proportional to 311,672.18, 467,483.29 and 138,617.51

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Solution

The fourth proportional to 311,672.18, 467,483.29 and 138,617.51 is: 207,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,672.18 : 467,483.29 = 138,617.51 : x
  2. Step 2: Convert to fraction form
    311,672.18/467,483.29 = 138,617.51/x
  3. Step 3: Cross multiply
    311,672.18x = 467,483.29 × 138,617.51
  4. Step 4: Simplify right side
    311,672.18x = 64,801,366,942.45
  5. Step 5: Solve for x
    x = 64,801,366,942.45/311,672.18
  6. Step 6: Final answer
    x = 207,915.14

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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.