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Finding the Fourth Proportional to 419,891.36, 579,275.62 and 247,741

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Solution

The fourth proportional to 419,891.36, 579,275.62 and 247,741 is: 341,779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,891.36 : 579,275.62 = 247,741 : x
  2. Step 2: Convert to fraction form
    419,891.36/579,275.62 = 247,741/x
  3. Step 3: Cross multiply
    419,891.36x = 579,275.62 × 247,741
  4. Step 4: Simplify right side
    419,891.36x = 143,510,321,374.42
  5. Step 5: Solve for x
    x = 143,510,321,374.42/419,891.36
  6. Step 6: Final answer
    x = 341,779.65

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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.