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Finding the Fourth Proportional to 300,258.08, 450,387.36 and 75,618.56

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Solution

The fourth proportional to 300,258.08, 450,387.36 and 75,618.56 is: 113,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,258.08 : 450,387.36 = 75,618.56 : x
  2. Step 2: Convert to fraction form
    300,258.08/450,387.36 = 75,618.56/x
  3. Step 3: Cross multiply
    300,258.08x = 450,387.36 × 75,618.56
  4. Step 4: Simplify right side
    300,258.08x = 34,057,643,605.40
  5. Step 5: Solve for x
    x = 34,057,643,605.40/300,258.08
  6. Step 6: Final answer
    x = 113,427.90

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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.