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Finding the Fourth Proportional to 309,891.61, 427,902.51 and 252,539.36

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Solution

The fourth proportional to 309,891.61, 427,902.51 and 252,539.36 is: 348,709.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,891.61 : 427,902.51 = 252,539.36 : x
  2. Step 2: Convert to fraction form
    309,891.61/427,902.51 = 252,539.36/x
  3. Step 3: Cross multiply
    309,891.61x = 427,902.51 × 252,539.36
  4. Step 4: Simplify right side
    309,891.61x = 108,062,226,017.79
  5. Step 5: Solve for x
    x = 108,062,226,017.79/309,891.61
  6. Step 6: Final answer
    x = 348,709.75

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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.