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Finding the Fourth Proportional to 311,208.76, 466,779.12 and 100,790.20

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Solution

The fourth proportional to 311,208.76, 466,779.12 and 100,790.20 is: 151,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,208.76 : 466,779.12 = 100,790.20 : x
  2. Step 2: Convert to fraction form
    311,208.76/466,779.12 = 100,790.20/x
  3. Step 3: Cross multiply
    311,208.76x = 466,779.12 × 100,790.20
  4. Step 4: Simplify right side
    311,208.76x = 47,046,760,860.62
  5. Step 5: Solve for x
    x = 47,046,760,860.62/311,208.76
  6. Step 6: Final answer
    x = 151,174.28

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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.