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Finding the Fourth Proportional to 304,861.83, 420,779.28 and 202,891.56

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Solution

The fourth proportional to 304,861.83, 420,779.28 and 202,891.56 is: 280,036.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,861.83 : 420,779.28 = 202,891.56 : x
  2. Step 2: Convert to fraction form
    304,861.83/420,779.28 = 202,891.56/x
  3. Step 3: Cross multiply
    304,861.83x = 420,779.28 × 202,891.56
  4. Step 4: Simplify right side
    304,861.83x = 85,372,564,534.88
  5. Step 5: Solve for x
    x = 85,372,564,534.88/304,861.83
  6. Step 6: Final answer
    x = 280,036.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.