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Finding the Fourth Proportional to 310,268.68, 428,181.91 and 174,299.69

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Solution

The fourth proportional to 310,268.68, 428,181.91 and 174,299.69 is: 240,539.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,268.68 : 428,181.91 = 174,299.69 : x
  2. Step 2: Convert to fraction form
    310,268.68/428,181.91 = 174,299.69/x
  3. Step 3: Cross multiply
    310,268.68x = 428,181.91 × 174,299.69
  4. Step 4: Simplify right side
    310,268.68x = 74,631,974,811.31
  5. Step 5: Solve for x
    x = 74,631,974,811.31/310,268.68
  6. Step 6: Final answer
    x = 240,539.83

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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.